There were never any restrictions placed on it, so it became a self-sustaining downward spiral to the current state of things. When I see the internet without an ad-blocker it is completely unusable. Quite frankly, I would most likely stop using most of the internet altogether if I couldn't block ads.
So what is the alternative? Same as always: paid services. A service / platform can either work out a pricing model that works for people, or it shouldn't / can't exist in that form.
Some people will argue that they'd rather have ads and also content for free and that's fine. Maybe some people can tolerate them. I cannot. I find them to be as close to experiencing physical pain as possible. It's like pure mind-poison and I will bend over backwards to avoid ads.
I am waiting for the age of smart-glasses to begin so that I can filter out ads in real-life as well. I simply never, ever, under any circumstances want to see any advertising ever.
If I want a product or service, I'll go search for it. I don't need anything to be suggested to me. And this is just my battle-hardened mind. I daren't think of what ads do to un-developed, children's minds.
It should be the government's responsibility to severely restrict advertising until it nearly doesn't exist. But that's not the world we live in, so I have taken matters into my own hands.