Some of us don't make money now, so no difference there then
not that I blame anyone but myself for that.
Personally I'd be glad to see an end to free/ad supported/ in app purchase models and a return to the tradition of paying for things.
Obviously some apps would likely remain free, Facebook and the like make money from selling your personal information so they're not worried about iap anyway.
As a consumer I hate all of that nonsense getting in the way. Clearly I'm old fashioned in that sense as I've grown up paying for everything. Now it seems to be the opposite, people want more and more, for less and less.
As a developer it would also be nice not to have to waste time thinking about and implementing it either.
As it is I do as little iap/advertising in my apps as possible, it's evil, I'd sooner make no money and have a clear conscience. But unless there's a dramatic change in the market (not going to happen) that's more and more the way things are headed.