How many ads does YouTube have to serve in order to net $15 from the advertisers?
How much would they gross in this circumstance (vs. what they pay out to content creators)?
When people do not pay for services directly with a credit card, they pay for it indirectly with ads and data collection. The internet would be a better place if companies didn't have to worry so much about monetizing indirectly. Plus, the only companies that can give out free services often have monopolistic intent.
This whole debate embodies why the internet has become what it has.