A fresh debate has erupted in the crypto investment community over whether traditional financial institutions will ultimately embrace decentralized finance (DeFi) or opt for permissioned blockchain solutions that fit existing regulatory frameworks. ARK Invest’s director of research, Lorenzo Valente, directly challenged the thesis put forward by a16z crypto, a prominent venture capital firm, arguing that public blockchains have proven their superiority and will increasingly be adopted by mainstream finance.
The dispute began when a16z crypto published a post on X (formerly Twitter) arguing that banks and asset managers are not rushing into DeFi but rather picking and choosing specific blockchain features—like tokenization and atomic settlement—that can be grafted onto permissioned, institutionally controlled systems. According to a16z, this “programmable financial infrastructure” allows traditional finance to enjoy the benefits of blockchain without sacrificing compliance, governance, or operational control. The venture capital firm claimed that TradFi wants blockchain, not DeFi.
Valente responded vigorously on Wednesday, asserting that private, permissioned blockchain initiatives have largely failed to gain traction compared to their permissionless counterparts. He highlighted the growth of tokenized real-world assets on Ethereum and other open networks as evidence that public blockchains are already winning the infrastructure battle. “Public blockchains have outperformed private blockchain initiatives,” Valente wrote. “The data on tokenized assets, stablecoin volumes, and DeFi total value locked clearly shows where the innovation is happening.”
He further argued that crypto-native firms such as Circle (the issuer of USDC) and Coinbase (the leading U.S. exchange) are best positioned to build the next generation of financial infrastructure. These companies, Valente noted, understand the nuances of on-chain operations and have already demonstrated the ability to scale while maintaining compliance. In contrast, incumbent financial institutions often struggle with the cultural and technical shifts required to leverage blockchain effectively.
Sentora co-founder Jesus Rodriguez also weighed in, offering a middle-ground perspective. He suggested that institutions are likely to adopt DeFi’s underlying infrastructure—smart contracts, decentralized exchanges, lending protocols—while layering compliance, custody, and other enterprise controls on top. This hybrid approach, he argued, could offer the best of both worlds: the efficiency and transparency of DeFi combined with the regulatory safeguards demanded by traditional finance.
The debate is not merely academic. It reflects a fundamental divide in the blockchain industry about the path to mainstream adoption. a16z crypto represents the view that institutional capital will only flow into blockchain if it can be controlled and audited in familiar ways. ARK Invest, on the other hand, has long championed disruptive innovation and believes that open, permissionless networks will ultimately prevail because they offer greater composability, liquidity, and user ownership.
ARK Invest, led by CEO Cathie Wood, is one of the most vocal proponents of cryptocurrencies and blockchain technology in the traditional finance world. Its flagship ARK Innovation ETF (ARKK) holds significant positions in Coinbase, Square (now Block), and other crypto-associated companies. The firm’s research has consistently argued that DeFi will transform financial services by removing intermediaries and lowering costs. In a 2025 report, ARK predicted that the total value locked in DeFi protocols could exceed $1 trillion by 2030, driven by institutional adoption.
a16z crypto, a division of Andreessen Horowitz, has been one of the largest venture capital investors in the crypto space. It has backed numerous DeFi projects, but also invested in enterprise-focused blockchain firms. The firm’s thesis about TradFi favoring permissioned systems echoes the narrative of many legacy financial institutions that have launched their own blockchain pilots—often using Hyperledger Fabric, R3 Corda, or similar permissioned platforms. However, these initiatives have frequently failed to scale beyond proofs of concept.
Tokenization of real-world assets—such as Treasury bills, bonds, real estate, and commodities—has surged in 2025 and 2026. According to data from rwa.xyz, the market for on-chain tokenized assets has grown to over $50 billion, with the majority of activity occurring on Ethereum, Solana, and other public blockchains. Major players like BlackRock, Franklin Templeton, and WisdomTree have launched tokenized money market funds, but crucially, they have done so on permissionless networks. BlackRock’s BUIDL fund, for example, uses Ethereum’s public blockchain.
Proponents of DeFi argue that permissioned blockchains reintroduce the very intermediaries that blockchain was designed to eliminate. They point out that a permissioned system still relies on a central authority to grant access and validate transactions, limiting the benefits of decentralization, censorship resistance, and global liquidity. DeFi, on the other hand, allows anyone with an internet connection to participate in lending, borrowing, and trading without needing a bank or broker.
However, a16z’s position is not without merit. Many institutional investors are wary of the operational risks associated with public blockchains, including smart contract vulnerabilities, front-running, and regulatory uncertainty. Compliance teams often insist on know-your-customer (KYC) and anti-money laundering (AML) procedures that are difficult to enforce on public, permissionless networks. Permissioned blockchains offer a compromise where transaction validators are known entities that can enforce compliance rules.
The tension between these two philosophies will likely shape the next phase of blockchain adoption. Some analysts believe that the ultimate outcome will be a layered ecosystem where permissionless settlement layers (like Ethereum or Bitcoin) coexist with permissioned application layers (such as tokenized asset platforms with built-in compliance). This is similar to the vision articulated by Sentora’s Rodriguez.
In the meantime, ARK Invest’s Valente remains confident that the momentum is on the side of DeFi. “We’ve seen this movie before,” he said in his X post. “Every time an incumbent argues that a disruptive technology needs to be dumbed down to fit their existing model, history shows that the disruptive technology eventually wins. Blockchain is no different.”
The debate also touches on the role of stablecoins, which have become a critical bridge between TradFi and DeFi. Circle’s USDC, now the second-largest stablecoin by market cap, is fully backed by reserves held at regulated U.S. financial institutions and is widely used across DeFi protocols. Coinbase, meanwhile, has built an entire ecosystem of products—including its Base layer-2 network—that aim to bring institutional clients into the DeFi fold while maintaining compliance.
Ultimately, the question of whether TradFi will embrace permissioned or permissionless blockchains may be resolved not by theoretical arguments but by practical results. As tokenization and on-chain finance continue to grow, the market will decide which model offers the best combination of efficiency, security, and accessibility. ARK Invest and a16z crypto represent two competing visions, but both agree that blockchain technology will fundamentally reshape financial infrastructure. The only disagreement is about the path.
Source: Cointelegraph News