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.
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I see but I don't still think it's necessary to get an income from gambling based on any affiliate program or the other, you might be thinking the bonuses from the referral worth it but they are just peanuts and it's high time people think out of this entirely cause it's heading no where. It's better of to own ones business and start accumulating money instead of this because it ain't profitable like you think. Tho your opinion of gambling as income without betting it's actually nice but then the outcome is small and with time I don't think it'll generate something huge so this is why it's better of to gamble for fun instead of making it as a source of livelihood.