The vast majority of Linux users are indifferent to lots of important things, operating systems are complex and there are too many parts to keep abreast of.
However, the foundations are largely GPL-licensed because the GPL is superior in the long term. If people want to donate their time to companies then good luck to them, but it is a stupid strategy to donate free time to companies. If a company is paying good money for someone to write BSD-licensed software then sure, but otherwise the developer is playing a mug's game. Not a universal rule, I can see why some crypto or standard reference libraries might want to be BSD licenced. But by and large it is an invitation for parasites to attach.
However, the foundations are largely GPL-licensed because the GPL is superior in the long term. If people want to donate their time to companies then good luck to them, but it is a stupid strategy to donate free time to companies. If a company is paying good money for someone to write BSD-licensed software then sure, but otherwise the developer is playing a mug's game. Not a universal rule, I can see why some crypto or standard reference libraries might want to be BSD licenced. But by and large it is an invitation for parasites to attach.