That's why i tried to make an example where that added service is not existing or very small. Making your money with "added services" or some real additional value is fine but then, you could just stay with GPL. I tried to build that example where someone exploits the "do whatever you want". Like rebranding everything, telling some customer "that's my product" and "please pay $$$$$$ for that awesome product". Of course in that example the customer would still have some kind of contract and that sales person would still have to offer some kind of support/guarantee..