But I assume that you probably do have a degree (any degree is a big advantage when applying for jobs, especially if it's a technical degree), and I also assume that it took you a lot more than 6 months of experience to get to 200k.
Two of them did not finish college. Yes it took a while (less than 10 years) but you can make your way to high levels of comp by just being competent.
Ok well I live in western, non-US country and no one I know is earning that as a dev.