Of course there is Google, Amazon, Red Hat, SUSE, even IBM uses a lot of GPL software...
Plenty of businesses depend on FOSS desktop software, it makes them money. If I use Linux and tools like Blender, Vim, GCC, etc..., and I sell the resulting product, then I'm making money with FOSS, am I not?
So unless you make the effort to contribute back, they will have some issues to pay the rent.
Of course there is Google, Amazon, Red Hat, SUSE, even IBM uses a lot of GPL software...