When did becoming rich became this arbitrary goal? I can see that from an American viewpoint, tbh, but there's also other measuring sticks, like name brand recognition, etc. ie: while you probably couldn't name 100 handjob players from around the world, but can name 100 american football players, it's entirely the other way around in the rest of the world.
I would tier that list into:
1) Soccer, Basketball (universal sports, wide recognition)
2) Tennis, Boxing (generally good individual recognition)
3) Ice Hockey, Golf, Baseball, Car Racing in it's many forms (popularity exceeds a specific country, niche brand recognition with strong marketing on very specific players that could place them, not the sports, in tier 2)
4) Football, Cricket, Rugby (regional phenomenons)
Again, this is not a knock on Football or Cricket. I wouldn't dare saying a Football fan is any less engaged than a Soccer fan at all. It's just a different measuring stick.