I blame men (me: man, one who has a tendency to interrupt), but I also blame the technology.
The group chat decides which person to highlight as speaking. It would be near-trivial to upweight people who spoke less, and downweight people who spoke more.
There could also be little metrics - "You've been speaking for 20% of this meeting and most people have been speaking for 10%. Why not let others speak?"
(It would be trivial to have a "presenter" button that allowed one person to speak without counting against their loudmouth quotient, or LQ.)
I personally would appreciate these features as an interrupter.
Point is that the people who set the features in the products and the people who buy these things are also interrupters - dominant types, mostly male. So they don't want a fair conversation system - they want one that they can dominate. Maybe they don't admit it to themselves, but that's what they think.
Great article, have some claps!