Ah yes, the hypothetical second step, in which tracking is going to be outlawed (I'm not holding my breath), except, of course, for the third party services that do the aggregating, which will "sell" (literal quote) the aggregate data, so I guess these are by semantic sophistry not adtech companies but something else.
I'm so glad this genius "plan" can be used to justify Mozilla funneling data to adtech firms right now, because in some hypothetical future timeline this somehow can be construed with a bunch of hand-waving and misdirection to be in my interest.
How about instead we have a browser that only cares about the users, and not give a fuck about adtech? Its number one goal should be to treat adtech as hostile, and fight to ruin that whole industry.
Ok, I misremembered it says "pay" for the aggregate results, not sell.
So it doesn't say ISRG is going sell data, but the "full solution" will have other operators that get payed, i.e. they're going to sell the aggregate data. Also, they envision multiple such operators, all of which it seems need to be "trusted".
https://github.com/mozilla/explainers/tree/main/ppa-experiment#end-user-benefit