When people are confronted with the actual cost, they tend to say no.
With a subscription, their head tells them that for 10 €/$ they get an infinite number of articles.
No, they get the articles that _you_ provide. But if _you_ provide only 50% of the interesting articles, as does every other provider, then approaching the ability to access 100% of interesting articles get very expensive. Just getting to 90% of the articles would cost 40€/$. And pushing that to 99% will cost 70€/$.