Ads, subscriptions and sales are how sites make money. Mostly ads. And some sites will sell your data. I am not going to get into too much detail about them or the problems with them, just stating these are the ways people make money from their website. There is also donations too. These revenues have proven successful and lucrative for different companies and these models will continue to be used. It is easy to think of crypto as replacing these models and, if you hate ads, then you can make a site that bypasses them. Look at steemit. But that doesn't mean you can't have a site with ads and crypto. Or a subscription service that also has a coin. Crypto is a new model can does not take away from the old.
It sounds weird. You are literally witnessing a new revenue type of stream being created. It is like we are the first ones to see someone sell ad space or offer a subscription. It can take sometime to adjust. But when you do you realize sites and content creators now have a new tool to help grow their business and their work.
Take steemit for example. You could add ads to the side of the screen or to the bottom of the post. You could also have accounts that are only accessible if you pay a fee. Or you could sell a product and still make steem from your post. Or do not of it and still give your followers rewards without costing a cent. It is pretty crazy and is up to people to decide how they should be used.