Your last paragraph: it is sad. But we had successful global networks before the Internet (the PSTN, telegraph) and we'll certainly have global networks after this at some point in human history. Perhaps in the the time between the Internet and what's next, the world will become a bit more mature about a few things.
this is teleological thinking. it's not necessarily the case that things get better over time.
> But we had successful global networks before the Internet (the PSTN, telegraph)
These were ripe with espionage, wiretapping and sabotage. Access to it used to be highly restricted as well, up until the 90s for example you were only allowed to connect government-licensed modems to the German PSTN directly.
Those predecessor networks weren’t problem free. Many conversations to “interesting” places were monitored.
The counter-reaction to this era will include additional communication control.