You’d be entirely correct, and that’s exactly why there’s an ongoing debate in physics and cosmology as to why there’s so much matter, and so little antimatter in the universe.

Fighting the uphill battle yet again. And yet again, this is gonna fail because many, if not most websites will either ignore it completely or find a workaround to keep selling your data. After all, what are they gonna do, sue every company that does this? Not to mention that Do Not Track is already a thing, and it doesn’t work because any site that relies on ads for money isn’t gonna stop tracking you just because you asked nicely, and the ones that do are already more respecting of user privacy anyway.