Casinos are incredibly exploitative not only to staff (even relatively 'above board' companies like Evolution have awful labor records in poor Eastern European countries), but they thrive out of milking their customers in incredibly manipulative, tactical ways to bleed them as slowly and effectively as possible.
Tactics such as returning offers are specifically made to encourage people to pick up gambling addictions. Regulations are skirted by companies like Stake, allowing customers to skirt restrictions easily with a VPN and lax KYC. Their massive presence in sports as sponsors help them advertise to not just adults but children who engage with sports as well, a fact that I'm sure these operators love.
While Mr Beast might use tactics that could be construed as similar, or tries to hit KPI which are similar to those used by casinos, I'm quite sure that Mr Beast video addictions do not lead to thousands of suicides a year, and that fact alone leads me to think that it is in fact obvious that Mr Beast is not as far out ethically as casinos.
That’s not obvious