I don’t think we need more licenses. OSS license proliferation is bad as it is. IMO, people should do their best to stick with the major licenses: GPL, AGPL, MIT, or Creative Commons if it doesn’t fit the above.
The problem with a tax that you’ve proposed is that it would be nearly impossible to enforce. How would you know which companies are pulling your library?
What I’ve been doing is adding the Commons Clause to my license and that I think helps. I don’t write wildly popular software so I don’t really see people donating or asking to purchase a license.
I personally like the Mozilla model where they donate to various open source projects from a common fund. I’d like to see more stuff like that.
Michael Scott once quoted some guy that said “You miss 100% of the shots you don’t take.”
You shot your shot. That’s the important thing.
Good for you!