I'm very frustrated by some of the answers here and on Twitter. Carmack says: > The GPL virality wound up being a net negative, and more value would have come from BSD. [...] The best aspects of GPL work didn't manifest, but tons of opportunities to just copy-paste-modify were lost due to license concerns. One of the answers on Twitter: > Then what if it's being exploited by big techs and make your work proprietary?…
It's natural that people think he's using his status as a super programmer to lobby for the position that currently benefits him.
I don't see why he would be more qualified to assess the pros/cons of the GPL than the Linux and GCC authors.