There is no fundamental privacy issue with "influencing your future" without disclosure to the advertiser. The question is what is it that this ad tech company

There is no fundamental privacy issue with "influencing your future" without disclosure to the advertiser. The question is what is it that this ad tech company claims to offer? And then does run in practice? There is certainly space for more vendors in this direction. There are other issues but not so much privacy. For example a self-hosted ad platform which offers to run ads based on internal browsing profile would be let through at this site at least. In reasonable amount, bandwidth overhead and annoyance to the human. The issue currently is that there seems to be much more money in selling all the data outright - and that gets a sharp no.