Look, I was born, raised and spent most of my life in the country government of which considered themselves the one and only source of what is good and what is bad for 70 years. Actively punishing people for disobedience for "greater good". This great experiment came at the price of just a few tens of millions dead people, besides other things. And it didn't end well - country, being one of the superpowers of the world, basically disappeared overnight.
Since then, when I hear "greater good" I feel an urge to kill (only half joking here). And "requiring the source code" sounds pretty much like "greater good" for me. If I'm releasing the code, then I'm releasing it. If I think that some asshole, who invented the best smartphone on the planet, will use it for his own profit and if I feel pain thinking so, I'm not going to release it.
Releasing source code and attaching a piece of political agenda to is is not a coding activity, it's a specific kind of political activity - a political propaganda. "When I hear the word propaganda I'm reaching for the gun".
hehe, well, if you make it available with bsd3/mit, if someone really wants they can gpl it, so anyone arguing that it must be gpl from the get go should just commit to forking it :)
(you know you're doing well when folks want to fork you!)
