Comment by potatoyogurt

Unless you're also going to disclose all your cookie ids, mobile device ids, connected tv ids, transaction history, income/demographics/consumer preferences, etc. etc., there will still be a lot of room for adtech companies to gather information about you. And even if you do, there is still attribution of purchases to impressions or clicks, audience segmentation, ad retargeting, and many other lucrative areas for companies to trade your data.