Yeah, they're into trillions, but aren't they like 5% of most pension funds, which are the biggest stores of wealth?
Also, if you're looking at trillions invested, I'd hardly call them startups or speculative investments. It's certainly true that something like OpenAI or Uber spent (and still spend?) many years without making profit, but by the time they're raising rounds of billions, it's no longer anywhere near the same level of risk, and the statistic that "most fail" rings less true.
It's speculative until there's a steady stream of profits paid out to investors. I wouldn't say that the size of the investment or of the business makes any difference in that aspect.
Also, if you're looking at trillions invested, I'd hardly call them startups or speculative investments. It's certainly true that something like OpenAI or Uber spent (and still spend?) many years without making profit, but by the time they're raising rounds of billions, it's no longer anywhere near the same level of risk, and the statistic that "most fail" rings less true.