The purpose of faucet is marketing
just anyone sit down and do calculations: how much does someone earn with facucet? the person earns little and is earning in a casino and taking the same money to play in the casino, the casino is not earning any profit with that, I don't even know why casinos do such a thing, because they don't make a profit with that kind of thing, the only something that gives them a profit and when people make deposits at the casino and lose everything, then the casino makes a profit, but if people deposit and win a lot the casino loses, there are people who make large deposits and when they win the casino loses a lot of money
Probably he's referring to market people to come into the platform, this has been a thing in the past I'd say when people are getting enough on their faucets but right now, it's too rare people will get into that unless worth it for them. There are too many different types of marketing and giving faucet to try to especially for newbies means a lot for them to try it out, just my two cents. By the way, I started to be lured into faucets way back then.
I see, this reminds me that in the past I also made facuts, I spent hours making faucets and after collecting a lot of satoshis and doge I exchanged to USD and withdrew, of course at that time the price of bitcoin was so low that I didn't even earn much when I used to exchange satoshis for dollars, but after google adsense stopped giving money to faucets because they didn't want to know about cryptocurrencies, then faucets started to die little by little and today there are practically not many faucets left, something bad and that's why I said that if a casino has a faucet it will go bankrupt, the casino will not gain anything having a faucet, this is a harsh reality, Rollbit.com already has many promotions and bonuses, that's enough, they don't need a faucet to attract customers
I think some of them stayed because they found out that there were other ad networks that you could work with. I mean google adsense doesn't allow erotic related websites as well, but there are adult ad networks too. I used to own a faucet and it was one of those early days where you would really make a good income in bitcoin amount, but it would not be possible to keep it going because bitcoin wasn't high so I sold it, it was really a great period to be.
Casinos could still make a profit out of all of this as long as they can make sure that they are sharing it with people who will later deposit money, and not to people who will abuse the system.