But it is not that easy...
...some years ago, when I was working downtown Chicago, we had an employee who clearly was...well nuts. He complained of little German men who were following him around and some other strange things. I am not sure of whether he was "Righty" or "Lefty" but he did name the Klu Klux Klan and the American Nazi party - along with every employer he ever had and some others in his "pro se" lawsuit about conspiracies.
I worked with our attorney and his parents to get him involuntarily committed. It is not easy (nor should it be or everyone would be getting their ex-spouses or annoying neighbor or the like committed.;);))
It costs money to do it. And it is frightening. During the process there were a couple of occasions I was very nervous - as the company representative.
At that time, in Illinois, an involuntary commitment was only good for seven days. Which means - he was back out a week later. And I was again a little nervous.
So..it is easy to say "someone" should have had him committed - much, much more difficult to be that "someone."