Which percentage of all the people who worked in startups got rich?

If your neighbour got into 8-figures, it means that it's one of the very big tech companies, and the founders are super, super rich. But that's a very, very small minority of the cases.

The lotery makes a few people rich, but I don't think it would be fair to say that "the lotery makes people rich" in general. In general, the lotery makes people a little poorer.

I didn't say everybody gets rich. The claim was that even early engineering hires never get rich. I disputed that.

Where did I say "early engineering hires never get rich"? I dispute the fact that I said that.