I don't believe casinos became scared of punters winning too much from player bonuses, I think it was simply a case of 'follow the leader', once they realized players were willing to accept any old
shit Welcome Bonus.
Used to be commonplace for a SUB to be in the realms of 25 to 35x wagering on the bonus amount and Bob's your uncle for many a year.
Myths and legends tell of even lesser wagering requirements that were even far less than that, but were perhaps a little too terrible to sustain, often 10x or less.
But yes, 35x was king, and so the Welcome Bonuses simply became
100% reload bonuses, they were plentiful, whilst benefitting the casino and the player and providing ample playtime. There's your 3rd, 4th, 5th and 85th bonuses, and it was never a problem to be used on any game bar jackpot ones. What's not to love?
Peace and tranquillity reigned, before one or two wise guys upped the wagering requirements to 40x, then it became 'bonus and deposits', then games were excluded from wagering etc.....to the point we find ourselves now.
Bonuses are long dead, and Welcome Bonuses a necessary evil almost used by casinos with no real player retention in mind. Yet games have also changed a lot in the last decade too and become so high-varianced that no one's likely to build up a bankroll and clear wagering, so there's always that
