Supply side platforms take a pretty big cut of the overall revenue, and are often very focused on existing formats like text and video. You’d be losing out on a

Supply side platforms take a pretty big cut of the overall revenue, and are often very focused on existing formats like text and video. You’d be losing out on a huge chunk of advertising dollars both from the SSP cut as well as not getting optimal pricing because you’re bidding in the wrong market. Of course ideally the question would be “why not just have users pay you directly instead of relentlessly monetizing every bit of personal information you can squeeze out of them” but as an industry unfortunately it doesn’t seem like we’re there yet.