So... you didn't actually look at the size of WikiMedia Foundation's bank account.

WikiMedia absolutely has enough money to run Wikipedia indefinitely if they treated their current pile of money as an endowment and just used the income from it to support the site. They don't have "billions upon billions", but they do have almost $300M, and they spend about $3M per year on hosting, and probably about that much again on technical staff to run the site, so about $6M per year. That's 2% per year. Assuming they can get a 6% average return on their assets, they can fully fund Wikipedia forever, and then some.

So, what do they do with all of the donations instead, if the money isn't needed to run Wikipedia? It funds the foundation's grant programs. Of course, you might actually like their grant programs. I think some of their grants are great, myself, and if they were honest about what they're using it for I might be inclined to give. But they're not, and the fact that they continue lying to Wikipedia's user base really pisses me off, so I don't give and I strongly discourage everyone I can from giving, at every opportunity.

For saving the US economy. They threatened to dump their 1.27 trillion in Treasury bones which would have basically cause the global meltdown but their economy has been in free fall since the '90s so they can make a credible threat to do that unlike the rest of the world that would be hurt substantially by it.

There are no domestic chips coming out of China that can come anywhere close to the training duties of the NV workhorses. At all. The Ascend 910C is rumored to be "as good as an H100", but the domestically (SMIC) produced 910B is so unappealing that even the neutered NV H20s are selling tens of billions of dollars a year worth of parts in China. This is probably because SMIC's N+2 DUV only has about 20% yield, making anything produced on it insanely priced.