Comment by piva00

No need for a nefarious plot, as usual with capitalism it just needs incentives. They will have the data, if at some point it's beneficial to Google to re-identify it then it will be done.

Do I believe they have incentives to do it now? No, as you point it out for their advertisement cash-cow they can already just rely on their own data (GMail, Search, Google Flights) but nothing stops them from the potential later on, the data is now theirs.

Likely its value is just to train LLMs but the funny thing about data is that you can always try to find ways to extract more value out of it. I'd prefer there was no possibility for that without requiring me to trust Google (or any corporation).

In an ideal world my data would be mine to control, not to be traded in deals among 3rd parties, it's valuable and I've spent time generating it so in a sense I've done free work to be extracted by these corpos.