But yeah, if you're talking USD, then one could easily live comfortably for five years in Vietnam/Thailand for $20k/year. (Although you could easily live in a ton of countries if you pick your town/city/area correctly) Then smash out all those side-gig bootstrap ideas that come to mind. If you can build MRR of approx $6k, then you've effectively built up the equivalent of $1M earning 7% in the bank.
Actually, my latest company was started 3 years (and nearly a month) ago, and is now earning easily that in revenue from one of its Saas products, so yeah, it's definitely acheivable.