Through forum auctions of ad slots or some other way? Will people be actually interested in buying slots? And will it really be profitable as compared to keeping a minor house edge of something like 0.5%?
I'm not an expert on advertisement, but that's true Google is the biggest source and according their claim in June they will stop dealing with cryptos, on the other hand I can imagine, if you offer your place for banners to casinos and big betting sites, your revenue would be great. According to some research there are something around 300 millions (only over 5 millions related to crypto gambling) gamblers (sport betting, casinos, poker etc.) and 90% of them lose averagelly $350 per year...it's a huge sum of money, we of course don't know if these numbers are exact, and still this is only legal part...maybe only 15, 20 or 25% whole market. If some project would offer 50% own games with %0 and the rest with 0-1% fees, then the project can attract huge part of whole cake and be profitable (my opinion)