Paraphrasing and bastardizing Gödel, all sufficiently complex systems are either inconsistent or incomplete. Gödel used recursion to reveal an inconsistency within typographical number theory. Programmatic restrictions on what one can do within a system (jails and sandboxes) can generally be escaped by finding and using a reference to the parent system.

Capitalism is a system. All systems can be broken if one chooses to do so. There's even a generic formula for doing so.

Ok, what mechanism within capitalism traps us within it? None, the mechanism isn't defined within capitalism. But we know that there is something trapping us. What about the parent system? The parent system in most capitalist countries is liberalism (enforced by state violence). It is the police of the liberal state who harass or kill you if you refuse to engage, or who otherwise enforce your starvation. It's actually the state that forces you to use money by collecting taxes.

So there's the issue. If you can figure out how to make something that fulfills the functions that you need from those within capitalism and the state, but do so without paying taxes then you can functionally escape capitalism. Ok, within liberalism there is an institution that operates similarly to the state (it collects taxes and provides services with those taxes), but does so without itself paying taxes: the church.

If you want to escape capitalism, start a religion.