People unfortunately keep voting for “corporate power” politicians, so corporations continue to be in charge.

If you support the ideas described in Nvidia's letter, you're going against popular opinion. Most Americans do not want to "make advanced AI more accessible, adaptable, and widely available". Indeed, many areas of the country including the entire state of New York have enacted datacenter moratoriums, responding to the widespread public concern that we can't have too much AI or it'll drink all our water.