There is a lot of statistics on downtime of different, even most advanced and famous websites. And downtime is a truly actual problem. For example, have you read of Apex Legends case a week or so ago?
This is the real problem we have to solve, no doubt in here. But we need a real solution, the one that will work. Snd for now I am pretty sure in Stacktical and their algorithms. For those who don't have the deep understanding - I recommend you to check out their MVP and POC available right from the website