Do you have examples? Because besides the other reasons mentioned about huge earning potential and being part of an important moment in history, the not-so-hidden secret is that any management position below C-level and above small team manager is usually extremely shitty. You are responsible for cat herding but rarely get to make the decisions in the first place. There are very few people IMO who desire or excel at "mid-high level" management positions (again, levels from director to anything below CTO) - I've seen people who enjoy and are good at leading small teams, but people at the director level are either there because it's lucrative or with the hope to get to CTO level ASAP, but otherwise it's one of the worst jobs in the "stress to moments of enjoyment" ratio.

So I could imagine tons of people in those roles who would love to be ICs again if there was also a chance at outsized wealth.