Not sure what the big problem with licensing is? Feels like some people just want everything in this space to be free. 500 euro for a lifetime license seems pretty generous to me, it's basically a small fee if you use it for any kind of commercial application.
There must be a better way than text to make a program.
Good lawyers aren't automatically good programmers, and good programmers aren't automatically good lawyers.
There is a reason why the Open Source community has standardized around a small set of licenses, and a reason why most attempts at writing new licenses end up in sadness.