If this were serious, it were a proposal to the shareholders. People at Twitter might like it to be a public utility, but shareholders will just laugh at you.
And who's going to pay for the infrastructure + thousands of engineers working at Twitter ? this isn't realistic.
What's unrealistic is the need for thousands of employees at Twitter.
Public utility doesn't mean no one gets paid. You're the one not being realistic.
You're the one not being realistic if you really think Twitter shareholders and VC will accept a hair cut to make the corporation a "public utility". That's ridiculous. Twitter is a mediocre social network, just because it is popular doesn't make it "public utility".