Nvidia is worth 42bn USD and employs 30,000 people.

Nvidia's has a market cap 30x of Intel's. So it could issue more stock to raise capital for a buyout. It's not the company equity but the market cap that it needs to have money to purchase. Even a controlling stake of > 50% would give them defacto control. Of course governments & regulators would probably block it or force Nvidia to divest bits of itself, and that's probably the greatest protection Intel has against such a scenario.

But if Intel weakens further, it may well be someone else tries to acquire it. I bet a lot of companies would love to snaffle it up. It's kind of ironic that Intel used to be the big dog in the semiconductor space but even AMD is bigger than it these days and are potentially many others who'd like buy it out. In fact, for all we know Intel might be shedding all these jobs to make it look more attractive to potential buyers.