ARK Invest has publicly pushed back on a16z crypto’s contention that traditional finance will favor permissioned, institution-controlled blockchains over DeFi — and the clash highlights a central question for the industry: which rails will carry the next wave of institutional capital?
The back-and-forth started after a16z published an essay arguing “TradFi doesn’t want DeFi. It wants blockchains.” Its thesis: banks and asset managers will adopt blockchain features that reduce cost, speed settlement and expand distribution — but they’ll insist on control, governance and regulatory compliance. In that vision, institutions use tokenization, programmable money and atomic settlement on permissioned or compliance-focused networks rather than fully permissionless DeFi protocols. A16z was careful to note it doesn’t expect open networks to vanish; instead, it foresaw regulated firms and crypto-native DeFi evolving in parallel.
ARK’s director of research Lorenzo Valente slammed that view on X, calling it “overly bearish and simplistic.” Valente argues the market is already moving toward public blockchains: tokenized funds, stablecoins and other trad-fi assets increasingly live on networks like Ethereum instead of isolated private ledgers. His point: crypto-native infrastructure has built liquidity and tooling that traditional firms are already tapping — and will find harder to ignore.
Key data and institutional moves strengthening ARK’s case:
- Tokenized real-world assets exceeded $29 billion by April 2026, with tokenized U.S. Treasury products alone around $13.4 billion.
- More than 40 major financial institutions have launched or developed products using public blockchain infrastructure.
- Standard Chartered projects up to $4 trillion in stablecoins and tokenized assets could migrate on-chain by the end of 2028, identifying established DeFi protocols such as Aave, Compound and Morpho as potential beneficiaries.
- BlackRock’s BUIDL fund has already gained on-chain utility, being used as collateral and linking to on-chain markets.
That doesn’t mean institutions are embracing permissionless access wholesale. Many institutional offerings live on public networks while implementing controls — KYC/AML gates, wallet restrictions, custody rules and transfer limits — so firms can leverage shared infrastructure without exposing themselves to raw, permissionless DeFi risk.
Meanwhile, technology is adapting to bridge the divide. Examples:
- XRP Ledger developers are adding permissioned trading and lending features that preserve on-chain settlement while meeting regulatory demands.
- Canton Network has attracted banks and market infrastructure firms by delivering privacy-focused, permissioned settlement tools tailored to institutional workflows.
The interplay between Canton-style permissioned systems and open ecosystems like Ethereum suggests financial firms will experiment with both approaches rather than pick one immediately. In short, the debate between ARK and a16z is less about whether TradFi will use blockchain and more about which stack — public DeFi rails, permissioned institutional networks, or a hybrid of both — will carry the most activity.
Takeaway: Institutional adoption is accelerating, but the future architecture is still undecided. Public blockchains and DeFi have momentum and liquidity advantages; permissioned solutions offer regulatory comfort and bespoke controls. Expect a competitive, hybrid landscape where institutions exploit whichever infrastructure best matches their risk, compliance and liquidity needs.
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