I saw this Microsoft commercial the other day. I'd say developers on the that company (Respawn Entertainment) rely on vim (and tmux) to do their coding. Here is evidence number one:
Notice gnu (presumably!) diff and vimdiff.
Here is another one:
Not 100 per cent sure here but I'd say that's
running on those consoles. Could there be some tmux love happening there too?
And the final one. Here, the monitor on the right is running the same type of
processes as in the same picture (Builds, tests?). The other monitor shows what
I think is
running tpope's vim-dispatch plugin over tmux.