You're coming from privilege. Just because you can afford it doesn't mean everyone else has money to spend on entertainment.
Facebook doesn’t give a rats ass about equity. If they did they’d copy a model like Apple’s App Store: as developer you pick a price tier for your app or subscription. That same tier translates into for example €2,99 per month in Europe, but the equivalent of €0,25 in less privileged markets. So the luckier people of the world subsidize the less fortunate, as it should be.