Ask HN: How to scale internet for 10B users?

The world population is growing, and newer generation are more and more on internet. How do you envision an internet scaled for 10G users ? Not in terms of technical scalability, load balancing, but in terms of organization: how to handle resources scarcity like usernames ? How to handle content moderarion ? Do you think federation can help (as it's like out human societies are organised) ? Any idea ?