Desktops are dwarfed by mobiles devices. AFAICT a linux kernel variant is present on most of the world's smartphones (with most of the rest being iOS devices, which I know little about), though you've addressed that by saying Google are pushing to reduce the impact of C underlying their system.

I don't want to make a song and dance about C being awesome or anything - we've certainly got massive issues with allowing that extreme amount of flexibility without ensuring that the developer really, really means what they've just told the machine to do - but it's hardly a small enclave that's holding out, it's still huge.

And there are still companies developing in it. I've seen a sort-of-microservices-in-C-implemented-as-a-sort-of-supersized-cgi-bin approach relatively recently.

And yes it was an abomination!