"It is a good way to produce great software which is GPL licensed. In some
cases it may even turn out to have a happy ending, like is the case with
Qt now. On the other hand, this risk was always there."
Heh. Qt's happy ending turned out to be leaving behind dual licensing by
releasing it under LGPL and striving to become a real community project
instead of centralized ownership. That's because Nokia realized it made
better business sense to strive for ubiquity. I agree, that is the way to
go forward and Oracle might still do that since they don't need rely on
dual licensing. MySQL's business according to then CEO was increasingly
moving towards support and services as well. Anyway, you wanted to know why
I consider it self serving and I hope I have explained that clearly to you.