Did you know that for every number there is in fact a larger number?

17 billions is pretty small change in setting up your own ram manufacturing.

The Chips bill meant to boost semiconductor fabs in the US was for 280 billion. And that wasn't even to get on par with what Taiwan was making.

Fundamental computer hardware like cpu/gpu wafers and the stuff that goes into RAM is EXTREMELY hard to make at all, let alone at any remotely competitive level. And the people currently running it in the world have had a LOT of time to get VERY good at it.

Instead of tens of billions, you'd need hundreds of billions just to get started. Plus, Valve probably doesn't want to try to compete and then get destroyed by one of those companies, essentially killing themselves in the process. They probably generally want to just stay in their lane and not overextend. They just started supporting a brand new entire operating system now, and that's probably enough, for now. Maybe in the future if everything is really successful?

Try that argument at work. "Guys, we made enough money this year!"

Ehh, the start-up costs would be pretty insane, and it would likely be a financial loss if the AI bubble popped and prices came down. It'd be a very risky move.

The US pumped 10x Valve's networth into building out chip manufacturing locally, like 5 years ago, and even then the fab specifications they expected to get out of it were not even in the realm of complexity of what Taiwan is producing.

Revolution? What revolution? Against who? Take things one step at a time, this is a game dev we're talking about. A successful one that now has the best digital storefront in the world, but still, a game dev. Not rhetorical questions, btw, I'm genuinely curious which revolution against who (and how) you mean.