I personally used to work for a casino called Caribbean Gold Casino back in 1998. This was when online casino first started. Back then the only way to deposit was with Credit Card followed byr paypal. We used to send a pin code by mail to the player's address and with that pin code. The player could withdrawal their balance via check. I personally did promotions for such casinos as Fortune Longue Group, River Belle Group, Paradise Poker, Delta Poker, etc. Things were much simpler back then. Most deposit bonus only carried like 8x wager and all games counted.
8X? Any links? I can't find the links on your site, but I have seen lowest rollover is williamhill's 20X rollover for 100% first deposit bonus. In fiat casinos, they offer decent rollover, so people can really cash out from them, not like bitcoin casinos, they set high rollover, generally 35-40X, so it is impossible to withdraw either deposit or bonus.
8x was back in the early days of gambling now they are 20X+.