Primarily, other rich people - waiting keenly in the wings for the Buy Signal.

Because the nature of this whole thing is a cycle. The worst of it is that the consequences echo downwards until they hit social strata that can't handle any loss (because they have little). That's where the social cost really beds in, in the thousands and millions of ruined lives of ordinary people that are the collateral damage each time there's a failed round of the RL Investment Board Game funded by the world's wealthiest 10%.

NVIDIA has such a huge market cap that it would affect every stock ETF or pension fund, not to mention the domino effects.

the general issue is that many other people will be exposed through index funds that will have to buy into a dubious company