What you want is mostly irrelevant compared to what makes more financial sense for these massive companies.
Google’s ad revenue was ~$80B in 2016.
Just to run the numbers on that, if they have ~1B average monthly users they’d need to convince every single user to give them $84.99/year to improve their ad margins by only 5% (which would only work once, and then they’d have no future growth opportunities, since ad buyers are always willing to up what they’ll pay for hyper targeted ads).
If you consider their realistic audience for “premium” ad-free content as being only being 1% of that market, that means you’d need to charge people hundreds if not thousands of dollars to get rid of the ads and offset the costs of losing that market.
It works if you’re not Facebook or Google, but otherwise ad’s are a fantastic revenue stream. Almost no companies with a tech footprint can exist these days on hardware sales alone.