There is infinite amount of software to be made. Desires and wants never get satisfied. There will simply be more software, more features, more supported platforms, more bug checks, more tests, more CI/CD, more docs, more websites, more services, more more more. Once we solve something, we have a million new desires that we want to solve. There will be plenty of work in software, up until the time when really all knowledge work can be replaced. At that point all bets are off.