Not sure that's true, actually. The usual strategy appears to be to comp the gambler with generous stays at the casino they're a patron of, with the expectation that they'll dump their winnings back in the next day.

Taken with a grain of salt, as my only knowledge of this is via Hollywood movies. It does make sense from a game theory perspective though.

They don't kick you out for being lucky.

The only reason to kick you out would be if they believed you somehow have an edge on them.

The customer who got lucky at first and is willing to try to be lucky again and again is the best customer for the casinos.

I am very doubtful. Outside sports betting (where you can actually outsmart the house) we loved winning players when I worked in online gambling. Winning players are much more likely to return and lose more than they ever won.

How did you handle winning sports betters? Did you decline to take their bets, cap their bet size or just move the line to compensate?

You ban them off your platform when they win.