Perhaps we should consider fintech and adtech to be similar scenarios? Fintech seems to have externalities that lead to ever growing income inequality. Adtech definitely has externalities on society in the form of increased susceptibility to foreign propaganda and mass surveillance.
I suspect the higher salaries in fintech and adtech are similarly inflated to fossil industry salaries due to the lack of taxing externalities.
It's not like they are helpless victims to economic principles, so they have no other choice than to work for the scummiest types of companies because they offer good pay.
If you’re more interested in shifting the landscape, changing the incentives becomes the priority.
Only one of these puts a stop to the objectionable behavior and wasted talent. So I know which I prefer.
Or changing laws to make the bad stuff illegal.
I'd be happy to make most ads illegal. In some places they banned all roadside billboards and you know what happened? It made the view better and didn't hurt the economy.