That’s not a customer support channel… that’s a paid service for getting bigger disk quotas and other trinkets and perks… basic customer support should not be a fucking perk.

Why hasn't a competitor arisen who uses customer support as a competitive advantage? Could it be because it is competitively disadvantageous to pay humans to support millions of non-paying "customers"?

We're not really talking about non-paying customers here. We're talking about YouTubers posting ad-sponsored videos, ie revenue sources for Google.

Customer support for a free service ? You get what you pay for.