I think that's really the key for the most productive individuals I've met.
A lot of things that I've paid for subscription services in the past I've just replaced with personalized software for myself. It's not something I would ever release publicly for others to use because I'm sure there's a million edge cases that wouldn't work for a broader audience, but it's perfect for me and saves me a ton of money.
This is just like in woodworking and jig making. Sure you can buy a pre-made jig, but you can now just 3D print (vibe code) one that's good enough and is uniquely made for the way you work.
Does this mean that jig makers out there are out of business? Sort of, they need to sell jigs complex enough that you wouldn't want to / be capable of making.
The most productive individuals were already doing that before, maybe they were "just" scripting, doing macros, going to training on how to extend their workflow. The most productive individuals didn't wait for AI to bother IT by explaining how THEIR very unique situation was special and they needed that one special tool nobody else wanted. They were already using FLOSS tools or heck even had a budget dedicated for a dev to help them precisely because they care. Nothing changed for them ... but for those who wanted to emulated them and never dared, maybe those do have now an excuse to try.