The people that "build the systems" are paid for by those corporations who make money by tracking you. Who exactly do you think is going to: A. Fund this new decentralized non-tracking utopia. B. Convince users already embedded in existing systems to switch to something less functional in order to not be tracked?
EVERY project that's tried what you're describing has failed miserably because end-users just don't care. Can you cite even ONE example of a competing system that has focused on privacy that has garnered what can be considered even a modicum of success against an already entrenched player?