You have either _never_ had to keep a secret (which I highly doubt, unless you happen to be a literal child) or you simply aren't arguing in good faith.

Assuming that you are arguing in good faith, let's consider a potential reason why someone might value their privacy:

Some people are born attracted to the same-sex (gay, lesbian, bi, pan, etc.).

There are some countries where being gay is a criminal offense; there are even some countries where you can face the death penalty for this. [1]

If a gay person lives in one of those countries, don't they have a right to keep this fact about themselves private simply in order to protect themselves? Or does their life have less value than the profit that can be generated by the "Data Economy"?

[1] https://en.wikipedia.org/wiki/Capital_punishment_for_homosex...

I don’t know anyone that would want to spend money on a hotel if there was a security camera in the room. I would get the more expensive room without the camera, probably go to a different hotel.

Doctor and patient confidentiality is implicitly understood. Do you think doctors should be able to tell advertisers what their patients are going through.

Maybe your own individual privacy doesn’t have value to you, and that’s okay, but other people value their privacy, and these corps profiting off data definitely find value in lack of privacy.