Should Riot really care if this game dies?

I think when LoL is truly dead, the main owner of Riot is dead.

LoL is currently the most popular game in the world, and might even been the most popular game in history, next to Minecraft and WoW. WoW is pretty dead now compared what it was 10 years ago, but the creators are ain't billionaires, doe they put more effort into other games that for ex Blizzard put way to much effort and money on.

Notch (creator of minecraft) Wasn't even a designer or game maker, he just made Minecraft in hopes of entertaining himself which turn out to be a billion project out of coincides.

Riot is a mix of both these. They didn't think they would earn billions of cash on LoL. But instead of keeping it all they put effort of making the LoL community the most creative place. Constantly throwing out contests and Esport tournaments. But most of their money goes into Patching LoL every 2 weeks. You might not think it cost Riot anything, but their servers might go on 10 million every month just to keep up and going and the amount of designers and programmers is like the twin towers of workers that needs to be paid every month.

Brandon "Ryze" Beck och Marc "Tryndamere" Merrill ain't even billionaires, but they are millionaires.

Well majority of money goes to investor (Tencent). I doubt everyone at Riot is "filthy rich" and not to mention Riot provides jobs for thousands of people. So i dont see them shutting down any time soon.