one of the apps I built is an app that you give it a website, it scrapes it, then places the google ads.

Over time it tries to improve the ads.

Right now it is showing a 5% click through rate over a few weeks. I have no idea if that is good or not, but it saved me the hassle of having to worry about google ads for another app

If the marketing platform works, then it would drive traffic to itself.

And you need to find a way to market it that prevents people from thinking “cool, I bet I can get Claude to whip up something similar real quick”

Right. Which is something you neither need nor want if you just wanted to have an app.