There are some ways to earn money without paicing bets and I would like to talk about some of them.
First and the main one is the affiliate/referal programas, this way by sharing your affiliate link you will get some incom from the users bets, isn't easy to get good affiliate (users who bet a lot) but with one high roller you could make a descent amount.
The second one is the VIP programas, like the one that stake offers, you need to bet to grow your account, but once you have a good VIP level you will get a weekly and monthly prizes, It will be better if you bet that month but even without betting you will get something each week/month.
On the first statement yes you can earn a small portion of money or lets say percentage base on the activity of your referrals this could be a passive income if and only if they are active players. On the second statement this requires a bet to reach at least the VIP role on the casino but again this second statement contradicted the title itself or the intro of the post because
There are some ways to earn money without paicing bets and I would like to talk about some of them.
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So still there's a bet involved just to reach the rank level requirement on the casino to earn their bonuses.