It's for example being rolled out at my current employer, which is one of the biggest electronic trading companies in the world, mostly C++ software engineers, and research in Python. While many people still run their IDE on the dumb terminal (VSCode has pretty good SSH integration), people that use vim or the like work fully remotely through ssh.

I've also seen it elsewhere in the same industry. I've seen AWS workspaces, custom setups with licensed proprietary or open-source tech, fully dedicated instances or kubernetes pods.. All managed in a variety of ways but the idea remains the same: you log into a remote machine to do all of your work, and can't do anything without a reliable low-latency connection.