Indeed. I’m not an entrepreneur or anything but liken it a bit to having a good initial poker hand - you can win with one good card but it is helpful and gives one more options to have two good cards.

So in the context of bootstrapping a company it’s helpful to have a legit fallback (way to suck it up and find an OK job) when things don’t pan out.

Edit: maybe this is obvious for CS/software folks but the extracurricular work I’m involved with is not exactly tech related, though my day job is coding