I just think that such a massive undertaking would cost so much, require so much sacrifice, and not even necessarily prevent fingerprinting.

If you don't want fingerprinting, then you genuinely cannot interact on the internet as yourself. Everything would have to be passed through a filter that makes everyone the same, including their interests, what they talk about, when they use it, and what they choose to consume.

At that point, it's no different than a network of robots talking to one another while humans play pretend like they're controlling them.

You cannot eliminate all fingerprinting via technical means alone. Even if you spend the billions and billions of dollars on drastically increased bandwidth and processing power, redesign every web framework from the ground up and brick every internet connected device on earth, bring functionality of all websites to the bare minimum and eliminate some types of sites/content entirely... some of it is just behavior based, which can't be removed without removing the humans from the equation altogether.

This is why I believe a legal framework is best for fingerprinting protections, and technical measures only when it's more of a simple data point to eliminate (e.g. if every browser, or most browsers enabled the Do Not Track header, nobody could realistically be identified by if they do or don't have it on), because the alternative is fundamentally demolishing the ability of anyone to do anything online at a cost that's even higher than what we spend now for more functionality.