How to Measure Business Level Impact

I know a brand who is using house and they were spending five figures a day on a platform. There was no incrementality to it. Almost none. Revenue didn't budge. That actually clicks in my head. It's like, let's see if this platform is finding new buyers. If yes, then let's figure out the measurement and go to town on it. But if it's all of it's hitting the same people that you would have hit on Facebook, then it's probably not worth going down that path. I'm very curious to do some video view stuff on Facebook as well. Also, because we do quiz stuff, I want to do some lead gen and measure