I'd say that internet could use a whole lot more killfiles, hellbanning, spam filters trained not only against commercial messages, whitelisting. The only reason that default is to allow for communication is that it's easier to implement. In the old times only kings could afford decent cutlery. Nowadays every peasent can. When I try to communicate with Obama today I won't succeed. Maybe in not so distant future if someone would want to communicate with me he will have to prove that he has something I'm interested in hearing. And another rape threat is rarely interesting.