What Jack Dorsey Meant by 'No Moat', and How Saylor and Musk Responded

Jack Dorsey, Block's CEO, wrote “there is no moat” on X, collecting more than 3.5 million views. The wording recalls a 2023 Google memo that leaked, cautioning that open-source AI would eat away at the lead held by Google and OpenAI.

Investor Warren Buffett is the source of the term, using “moat” to describe a durable advantage that protects a business from competitors. Both Strategy executive chairman Michael Saylor and Tesla CEO Elon Musk replied, though they pointed toward sharply different forms of protection.

What Lies Behind Jack Dorsey's 'No Moat' Remark?

Dorsey never linked the message to any particular product. It followed closely on his introduction of Dessa, a voice AI model developed by a small lab within Block.

there is no moat

— jack (@jack) October 24, 2026

Dessa was trained solely on human conversation, the team says, with neither text nor pretrained models. A single Nvidia GB200 NVL72 rack sufficed, according to Block.

Dorsey described the model as compact enough to fit on a MacBook. Block granted a handful of AI safety researchers early access ahead of a broader launch.

A user tied the “no moat” remark to that rollout. Their reasoning: a payments company is now producing AI that matches the biggest labs, so no advantage endures for long.

Dorsey has argued along the same lines previously. In February, he reduced Block's workforce by roughly 40%, contending that AI tools and leaner teams support a fresh approach to work.

Does the Last Moat Have Bitcoin's Name, or Does Strength Suffice?

Saylor contended that Bitcoin is exactly the moat Dorsey claims has vanished. That answer suits an ongoing campaign, since Strategy possesses the largest corporate Bitcoin stockpile. For years, he has framed Bitcoin as a bulwark for capital against inflation and faltering currencies.

bitcoin is the moat

— Michael Saylor (@saylor) October 25, 2026

AI expenditures, trade policy and climbing yields were a drag on Bitcoin, Saylor said earlier in October.

Musk went another way, pointing to ancient Sparta, a Greek city that counted on its soldiers rather than its walls.

“Sparta never had a moat,” Elon Musk on X

Musk has previously complimented Bitcoin's toughness, even describing the network as having no throat to choke.

Dorsey, too, has supported Bitcoin for years. Block ran a $1 million Bitcoin giveaway via Cash App in April.

The exchange underscores how the AI competition has now entered crypto. Saylor is wagering that, as software grows cheaper to clone, Bitcoin's scale and limited supply will become the lasting edge.