I don’t think developers earn 5-10x more than 15 years ago. Assuming you’re using something like $250k as a typical salary (for dev jobs at US tech-hubs) I guarantee you the typical equivalent in 2008 was not $25-50k.
Average income in tech-hub area in 2007 was: $85,355 for "Software Developers"[0]
Salary for developers that we discuss on HN seems to be in the region of $250k base, but that's not factoring in TC- which seems to be the bulk of income for the last 5 years. It's not unheard of around here to hear people talking about pulling in half-million if they are ex-FAANG. Which is nearly everybody these days.