I don't know how to make sense of this level of investment. I feel that I lack the proper conceptual framework to make sense of the purchasing power of half a trillion USD in this context.
Maybe your calibration isn't poor. Maybe they really are all wrong but there's a tendency here to these these people behind the scenes are all charlatans, fueling hype without equal substance hoping to make a quick buck before it all comes crashing down, but i don't think that's true at all. I think these people really genuinely believe they're going to get there. And if you genuinely think that, them this kind of investment isn't so crazy.
Personally, I do expect a big correction at some point, even if it never reaches the point of bubble bursting. But I have no idea when I expect it to happen, so this isn't, like, an investable thesis.
If this is a bubble and it bursts in a few years, a lot of investors in specific companies, and in the market broadly, will lose a lot of money, but Sam Altman and Jensen Huang will remain very wealthy.
I'm a capitalist and I think there are good reasons for wealth to accrue to those who take risks and drive toward technological progress. But it just also is the case that they are incentivized to hype their companies, even if it risks getting out over their skis and leads to a bubble which eventually bursts. There are just have lots of ways to extract wealth prior to a bubble bursting, so the downsides of unwarranted hype are not as acute as they might otherwise be.