One of them is for rich kids though, who have overpowered gaming rigs, and money to throw away on fictional space ships. Sure Elite Dangerous has the whole galaxy, but when it just repeats itself, it kind of is just as good as one solar system really.
I spent a lot of time on forza 6 and a lot on money on iracing. but eventually stopped racing. It is not fun any more and there is no respect in online racing. Just people wrecking each other