One thing I can imagine is even something like unconscious “self censorship”, choosing more permissive license to attract more people and even corporations which will hire developers…
This is the result of years of anti-copyleft propaganda which started to pay off. Now, all that corps need to do is wait for new projects and libraries to pop up and subtly (more than often openly) allocate resources to whichever project they need, or simply EEE. A much easier exercise than it was during the early years of copyleft where we could literally have a free alternate operating system to Microsoft, Apple and IBM while they were openly fighting it. Read on the Education and Government Incentives program for a reminder of what corporations are capable of.
Hey no one choses the location, family or culture we’re born into. Give yourself a break. The system is rotten to the bone now and we’re heading straight to a full societal collapse. Especially in the western world. Just live your life and preserve that humanity inside of you while the rest are becoming beasts.