It's been tried. Most directly by Google, but almost any publisher on the internet has tested various forms of subscription model.

While some high-quality publications (the New York Times, Economist, etc.) have seen some success in recent years, the overwhelming evidence is that the economics just don't work out among the general public.

Most people also underestimate the costs. IIRC, Google needs about $100/pa to supplant advertising revenue.

Yes, you may be willing to pay, so why aren't more services willing to take your money? Apart from the administrative hassle of such a program, the $100 (or whatever) are also an average. People willing to pay as much for an ad-free experience just happen to be at the top end of the value distribution for advertisers as well.

In other words: If you're willing to give me 2bucks, it's gonna cost you 5!