>If Google, YouTube and everywhere else starts asking you to pay high subscription fees for using their services, are you willing/going to pay?

Based on my rudimentary knowledge of microeconomics, it depends on how much they charge.

But bringing economics into it, it does seem strange that the internet is probably the only industry where this form of exchange (ads, producers, consumers) exists.

In any other industry, the producer pays money to ads, the ads get me to the place and I pay the producer.