I think the biggest value would be products tracking users, just as it currently is, like Google, Facebook etc. If assuming AI could learn from low quality data like humans could now, these companies have a huge dataset consisting of multiple GBs per living person that is available to them now including (verified) human written texts, search history, browsing history, video call logs/transcripts, translation transcripts etc.
In future company could even pay users to get access to their keyboard and mic to get the data that is verified to be human.
In future company could even pay users to get access to their keyboard and mic to get the data that is verified to be human.