When it comes down to passive income from crypto that actually comes from real revenue, these gambling sites have been awesome and really reliable for me so far. All of them however are nearly fully centralized and you need to put your trust in the devs while the bookmaking model is very traditional and doesn't bring anything revolutionary. The main thing I look at is if I would actually use the site myself (for Sports betting / Poker and I need an edge when gambling) and if the tokenomics / overall valuation / expected returns are sound.

Thanks for the tip on Aver, I had never heard of that one (there are so many around that it's hard to keep up) but will have a look at it. From the ones that try to be decentralized that I know, none really do a dividend revenue share for as far as I know. I guess sx.bet is the most adopted one, I only used it once so far though as they rarely have the best odds and from a tokenomics point of view, the SX token feels more like a utility token to reduced fees instead of having a real yield dividend share. There is wagerr which I occasionally use. Their token is used to bet which makes it hard due to the price fluctuations and it's a hassle to get in or out while in theory it should be deflationary, the fact that they are currently too slow in updating their odds makes it exploitable with a supply that has been increasing. (that hopefully will be fixed when v5 comes out) WGR also needs to be locked to run a masternode. There is also xfun.bet which I also occesionally use who have a buy back and burn mechanic for their token. It's also quite tha hassle to use with walletconnect and such but it works.

The one that gets it right potentially can become really big but I don't see any of the current ones pulling it off anytime soon honestly. In my view, the winning formula is some kind of system with liquidity pools on betting events where the price moves organically based on what side the money comes in on. I know Augur at one point did something like it but I haven't been keeping up to date with how things are going now.