It is a bit late to be arguing about the IP in Emacs. Only 4.5% of developers use Emacs today. More than 50% use VSCode. See https://insights.stackoverflow.com/survey/2019#technology-_-...
Nowadays Notepad++ is OK by me.
Hundreds of thousands, perhaps half a million.
I'd imagine it's fewer than that, but still, that really is a big deal.