I have. I'm saying that especially when public, there is no such thing as enough profitability. There's no number of ads that will satisfy shareholder demands. They'll have to squeeze more and more and the only possible signal that "more" has become "too much" is necessarily when users start walking away from the service.
It's not necessarily just ads. There's content. Aston Kutcher in a recent podcast talked about "vertical video" meaning people develop content specifically aimed at mobile users watching on a portrait phone. Snapchat is primed to deliver that content. Saying that there are not enough ads is like saying YouTube was a terrible buy for Google.
