Making a "smart person only" Internet is a social problem, not a technology problem.
We _still_ have a "smart person only internet" really, it's just now used mostly for drug and weapon sales ( Tor )
For some group of smart people, there will be a group of smarter people who want to dominate the The people they designate "the stupids".
The internet was a technological solution to a social problem. It introduced other social problems, although arguably these to your point are old social problems in a new arena.
But there may be yet another technological solution to the old social problems of monopolism, despotic centralized control, and fraud.
.... I did say "may".