Compliance with article 7 section 4 in particular (provision of service must not be conditional on consent for processing of personal data not necessary for provision of that service) is blatantly ignored by many actorsIn fairness, that's because it's a legislative over-reach that the EU wants to enforce extra-territorially, but a lot of businesses outside the EU's jurisdiction have declined to undermine their entire business model because a foreign government decided they should.
It is reasonable to say that people should have a choice about things like being tracked, and that such tracking may only be used with the subject's informed consent. This protects the privacy of those who value it by default.
However, IMHO it is not reasonable to say that organisations that fundamentally rely on such data processing to be financially viable must then continue to provide service to users who choose not to participate. That's an entirely one-sided deal, and it's logically unsustainable to require businesses to operate on that basis. You'd never tell a bricks and mortar grocery store that if someone came in but didn't have any money with them then the store still had to let them take a chocolate bar and eat it, and I don't see the effects of the GDPR in this respect as any better than that.
