And yet there are many thriving GPL projects, running on billions of devices worldwide, from routers to servers. GPL has created an environment where Netgear and Linksys collaborate on developing the same pieces of software, not due to morals, but due to it being the best option for themselves. Same with IBM and many other companies working on GPL sofware.
> not due to morals, but due to it being the best option for themselves
Indeed, and this is why the same thing happens in the BSD world. There are many examples of large and small companies, competitors, working on the same parts of FreeBSD.
Enlightened companies contribute to Free and Open Source software because it's in their best interest, not directly because of the license. Conversely, there are countless examples of companies who don't think it's in their interest, and willfully violate the GPL.
Plenty of companies simply avoid the gpl because it complicates things, and stick to more permissive licenses for their open source efforts.
Plenty more just do what the fuck they want regardless of what the gpl says.