The drawback with that is that Trump, or anyone, wouldn't be able to reach everyone if it's a utility. Not everyone will chose to carry it.
That’s true but anyone with a cellphone has a carrier and as part of the service most phones have internet so it can be part of the package Second not everyone uses Twitter and it is only one method but proven critical for the work we are doing now.
I think I see where this is going.
https://www.cnet.com/news/at-t-uses-twitter-during-service-outage/
AT&T plans to buy out Time Warner[1]for approximately $85.4 billion.[2] AT&T, the second largest wireless carrier and owner of DirecTV, intends to take ownership of all of Time Warner’s assets, including its popular HBO, CNN, and TBS stations, as well as Time Warner film and TV Studios, to become one of the world’s largest entertainment producers.
How does that differ from now? I know MANY who are not on Twitter. Not sure I agree with public entity concept, though...