As we speak police vans are en route to round up visitors to that Mozilla page, in co-ordination with Google's security division...
The information google gathers will never go away. If google collapses, that data will be slurped up by governments and the private sector alike, and there's absolutely no way for you to predict how it will be used in 40 years time.
The optimum strategy is to never let them get an ounce of information about you.
If it had been implemented in a robust way that required companies like google to remove all data about you, I'd be making an annual request, on general principals.
Given unlimited political power, I'd probably boil it down to the trifecta of "collecting data about someone, even in anonymised form, constitutes opening an account for them. Accounts are always wholly owned by the person they are about. In the event of multiperson accounts each individual has controlling influence over the account's deletion (see rule three)", "when an account is created the owner or owners must be notified", "upon an account owners request, you must completely delete an account and all associated data, working in good faith to delete it as fast as possible, even if deleting that data will affect other accounts".
It probably needs some refining, but the goal is to punish deliberately obfuscatory system designs where data or account information is deliberately entangled to make data deletion impractical, and give people control final control over the gathering of personal data about them.
Ultimately, I really liked the Gevulot system from the quantum thief (really worth reading, it's an amazing series). It'd be nice to have an internet based version of the same system.
Or are you suggesting that they should do no analytics at all.
Knowing 24/7 where you are is one thing, and knowing everything you search is another, but if you combine these two, it already becomes very scary.
Google knows so much more. It is a wet dream of spying agencies.
What can we do about it? I think most people don't understand technology enough to see what happens, so education might be the first step.
I personally avoid Google.