If you don't start using and contributing to free tooling now, they'll never get better and they'll never be "professional" (whatever that actually means).

You can continue to lock yourself into proprietary tooling, but that result will always be the same: a decent product gets bought, made subscription, get worse in quality while bleeding the customer out via subscription. You are already there will Adobe, and its started for Affinity.

So, the longer you hold out on FOSS tooling, the worse and slower things will be.

Look at how excellent FOSS tools are when they get attention and investment: blender and krita.