They understand that you are part of the cohort that doesn't want to be monetized. Which is the reason they don't change it for you, because the efforts required to remove this cohort from tracking and still serve useful search results are a lot higher than what they think people would pay for.

But let's surprise them. I personally would be willing to pay up to 10k per decade of my remaining life expectancy to opt out completely. Upfront payment, right now. A package deal including Amazon would be even better, maybe for 50% more?

I think at one point people need to put a price point to their privacy, otherwise nothing changes. The market has no incentive for this change right now. And yes, that would mean that privacy is a luxury for people who can afford it, which is not what I would like to see, especially since I remember the times when you had privacy by default when going online. But I can't imagine how it can become a fundamental right under the current market conditions.