Unfortunately Linux has tons of them nowadays. Google, Amazon, Microsoft are three of them that I know. And not just in kernel, but they also contribute in other projects in the ecosystem.

I know. I am a Linux enthusiast myself. After Sadya got in the position, Microsoft suddenly became to get interested in Linux, contributing to projects and even funding them. But to this day, I still do not trust them.

My memory might be weak on this topic but Microsoft has already went through a lawsuit due to not allowing people to use other browsers. And that case made Bill Gates lose money.

Might be this one: https://en.wikipedia.org/wiki/United_States_v._Microsoft_Corp.?wprov=sfla1