I used to care, but I don't anymore. They can read my emails, my code, track what websites I visit and what music I listen to, be my guest. I'd let them read my thoughts directly if we can build technology to do that lol. I realized that ultimately, these corporations are too stupid to do anything of value with all that data, so I don't feel threatened.
The danger isn't that they'll do anything of value; the danger is that they'll do something stupid with your data.