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The games that you play have different algorithms and chances to win, but of course, the owner should always win in order to have a successful business. At the same time some casinos can easily go bankrupt due to bad management.
The bookie must always win, no matter how the bookie or casino owner will continue to benefit, that's the reason why the gambling industry is in great demand to continue to make more profits from users who only gamble without caring about their money that keeps coming in.
The game algorithm system in it has been arranged in such a way. Those who are given luck with a large jackpot are only a few people, it is to lure others to play and continue to put their money hoping to get the jackpot too. But the defeat will certainly be more than the victory that can be obtained.
Regarding the video you shared where an advisor of a known casino was talking about how they don't care about customers and make sure to make them lose more for me it seems like a bad and suspicious casino that doesn't care about their customers. Money laundering is also always present and some people find ways to trick the system and that’s why sometimes KYC process takes time.
Customers are only used as a profit field, especially finding unfair gambling sites.
But of course, not all gambling sites apply such cheating rules.
There are still some gambling sites that give their customers a pretty good reward.
KYC is certainly a sign that the casino is wise in stopping various criminal acts that can occur.
KYC is done gradually and it will be checked by the people behind the casino site.