My general feeling is that no matter what platform, if you can indeed provide a solution that help professional save time, and you market it well, they will likely pay for it.
That’s just capitalism 101.
As long as your solution is cheaper than the extra amount of money it’s going to produce for the said professional, he will pay for it.
These guys built a few Figma plugins, made money from that, and also got acquired by Figma: https://diagram.com/