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There is no reason to prevent for-profit companies from achieving those goals especially increasing user satisfaction, but, the problem is do they use manipulation techniques or shady schemes to achieve that?
If that is true, then the word itself will become sinister. Instead of feeling better, the users are manipulated. This is obviously wrong, and we know there is antitrust toward big technology companies, and the reason is because they practise those things.
The thing is that every company, from a major one to a tiny food stall, all of them are trying to "manipulate" people so that they were buying their products. And those who are telling you about "manipulation techniques or shady schemes" are doing that too. They just want you to consume their product, information in that case. And it's natural, there's nothing wrong with that. You just can choose not listening to them, including the promotion from casinos. It's your choice.