Big companies means more opportunities to lead bugger project. At a big company, it’s not uncommon to in-house what would’ve been an entire startup’s product. And depending on the environment, you may work on several of those project over the course of a few years. Or if you want to try your hand at leading bigger teams, that’s usually easier to find in a big company.
> Is it still satisfying if that software is bad, or harms many of those people?
There’s nothing inherently good about startups and small companies. The good or bad is case-by-case.