Self imposed limits that block the buy feature are offered by a growing number of operators, separate from deposit or loss limits, and I think they are underused. You keep normal spinning available but remove the one click path to spending a hundred bets. The responsible gambling section on
https://thebonusbuyslots.com lists which casinos support a feature buy block in the account settings and whether it is instant or has a cooling off period. For anyone who enjoys the games but not the impulse, it is a sensible option.