So I wonder what motivates people who want to get rich on sports betting if they believe in such a pattern? Do the players sincerely believe in their own exceptionalism and genius?
Luck is a major factor in gambling even in sports betting wherein knowledge is an edge. Many gamblers spend their money to bet in sports but only few are fortunate to win a decent amount. Anticipating to become rich is understandable, but keep in mind that even rich people can also lose their wealth in gambling if they're not wise.
High rollers do have multiple categories, just as the rich, someone could gamble a million dollars in a session, and which could be a total bankroll of another rich player in the house. So, even the rich gamers know their limits, and when they go past it out of pressure, it's quite their fault. But when a high roller gets really lucky, the win is always massive, that's why they're only searching for that one win that'll make the difference. Thereby hardening the control for high rollers and place them on high risk of losing a lot.