People currently assume AI will be an accelerant of inequality because all currently useful models (i.e. those potentially capable of mass labor disruption) are only able to run in multibillion dollar datacenters, with all returns accruing disproportionately to the oligarchs who own said datacenters.

I'm not sure this moat is inevitably perpetual. It's likely computing technology evolves to the point of being able to run frontier-level models on our phones and laptops. It's also likely that with diminishing marginal returns, future datacenter-level models will not be dramatically more capable than future local models. In that case, the power of AI would be (almost) fully democratized, obviating any oligarchic concentration of power. Everyone would have equal access to the ultimate means of production.