I have long held that Twitter should have been bought by a consortium of media companies and run as a market utility. It’s been the media internet’s comment section for long enough that the BBC, MSNBC, Sinclair and even OANN ought to have understood the value of sharing it.
If we didn’t already have email, I doubt we could create it
Hell we've pretty much 'uncreated' email over the past decade. How many people do you know who don't get their email via Google or Microsoft? I used to work for a very large university. Back when I was there, there was a team of Unix greybeards hosting all of the Universities email off of a bunch of Solaris boxes. It worked pretty flawlessly, end when it didn't they knew how to fix it. Today it's all been handed over to Microsoft and when something doesn't work, the help desk can just shrug and say "nothing we can do, it's Microsoft"
Running your own email server in any practical meaning is more or less impossible.
Most of the world only got online and owned personal computers for the first time in the past decade through the meteoric spread of smartphones. Twitter was just there when they arrived and I suppose it was good enough. Twitter was also a famously mediocre implementation of a "great" idea but again, it was just at the right place at the right time.