playing with semantics makes you sound smart though!
The original idea was that it should be legal to track people, because it is ok in the analog world. But it really isn't and I'm glad it is illegal in the EU. I think it should be in the US also, but the EU can't change that and I have no right to have political influence about foreign countries so that doesn't matter.
Watching what is bought is fine, but walking around to do that is useless work, because you have that in the accounting/sales data already.
There is stuff like PayPal and now per company apps, that works the same as on the web: you need to first sign a contract. I would rather that to be cracked done on, but I see that it is difficult, because you can't forbid individual choice. But I think the incentive is that products become cheaper when you opt-in to data collection. This is already forbidden though, you can't combine consent with other benefits, then it isn't free consent anymore. I expect a lawsuit in the next decades.
This part gave me a genuine laugh. Good joke.
adjusts tinfoil hat