I think you underestimate $28.83 billion.
I’m pretty sure the math of 28.83B - 28.82B is 0.01B or ten million dollars to support 2-3 Billion users worldwide.
Which is laughable.
If you hire the cheapest WFH customer support in the world, and provide a minimal service that was slow as heck, you couldn’t even setup a global program legally and in most languages for users for $10 million a year even if you charged for support tickets.
The legal and localization costs will be massive.