It's easy to decide how to vote with your wallet when the marketing efforts are visible and aboveboard.

Not so easy when it's a company selling their CRM DB to another company with no notice and no recourse. Or the spammers and call spoofers and... and...

Do we stop buying everything everywhere until backdoor data brokers are all revealed and shut down? All the tracking shops too? How do we get control of the rest of the iceberg?

I don't think that's the point. Sure you can vote with your wallet, but it is still pretty annoying to have an insurance salesperson or a telemarketer make an irrelevant sales pitch to you every few minutes.

While targetted ads should technically alleviate this annoyance, in reality it doesn't really work as well as advertised (pardon the pun).