I hope many.

I tire of D&D's stranglehold on players minds. It's slowly getting easier and easier to suggest people read a second book, and while that's great to see, we still have plenty of work to do.

And, no, for the 11th time, I will not run my Star Trek game in 5e that's insane.

What's truly funny is that this isn't the first time this happened. 4th edition had WotC bamboozle third party creators by fiddling with the OGL, and third party creators responded by making a rival to D&D. They called it Pathfinder.

Then you look a little further afield and you see a massive indie TTRPG community that I have to assume had an influx of new designers who only found out about it due to the OGL incident.

I am not sure the OGL debacle is really a reason. There is I don't know how many thousands RPG published each years. If I do a search on kicksrarter for RPG in boardgame category I get above 6000 matches.

So tons of new RPG are being published each day, most of them are forgotten, some are good enough to drag a small but existing community, and may-be a dozen of games are big enough to provide a living revenue to their authors, while one game per decade really change the way we play (Basically D&D, Chtulhu, Vampire, Fate, Apocalypse world) so not sure there is something new under the sun.

The D&D player will keep playing D&D, the non D&D player will keep not playing it, and with the marketing power of Hasbro will keep having a long time telling beginner that there is more than just D&D or that tweaking D&D into a horror games where weak humans face cosmic error takes more work than buying COC 

WotC really shot themselves in the foot spawning all this new competition, didn’t they?

They can do that as often as they like. This is great!

I don't think any of these were created per se from the debacle but certainly it helped grow them and maybe push timelines up.