This is what I think as well, casinos care for the most part care for one thing and that is to make as much money as possible, and as long as people have interest in those kind of events then they're going to keep offering those kind of bets, besides the issue with the US election cannot really be pin down to them, it was an extraordinary event that was without a doubt outside of their control and I think many gamblers can understand that fact and simply accepted the delay as something inevitable.
Gambling site owners always favors what will bring them money.
Like what you have said, as long as there are gamblers who will take part and bets to this kind of offers the site will continue
catering this event. They will keep providing odds as they are receiving profits from each events that being offered from their
platform.
Gambling owners see this as a big opportunity to make money. In fact, only a few sites offering such betting options at this time, and that gives them a huge favor. But this could not be surprising for the next election many betting sites will open for this since they know that gamblers are wanting this.
Miss Universe, US Election, they have it already, and probably local gambling sites will offer such a scheme base on their local activities. I've found this as a habitual betting option and that it keeps rolling till nobody makes a bet.