This is how I view this scenario: "You're not wrong Walter, you're just an *I don't have the education to emote without using a curse word*."
Sure, United is well within their rights, but it never should have gotten to this point. United is getting skewered for having crappy customer service, because people don't like overbooking,
and because they randomly selected people instead of upping the financial incentive to find more volunteers. It's not the passengers fault United's crew schedulers didn't have their S together. Frankly, while they have every right to do what they did, and yeah, the guy acted weird, UNITED escalated the situation by calling the cops on a paying customer - they screwed up in PR world, and they'll pay for it.
According to United's own website, they serviced 143,000,000 passengers in 2016 and let's assume this will be the average we'll see in 2017. Let's say that only 1 in a million customers will be upset enough about this to say "SCREW UNITED, I'LL FLY ON LCC BRAND X INSTEAD." That's still 143 airfares they're missing out on over the course of the year. Google says that the average cost of a ticket in 2013 was $379, that's $54,197 - and that's if
only 143 people change their air carrier per year. They could have upped the ante to $2500 and I guarantee that would have gotten someone off that flight and not had a public relations nightmare on their hands.
If I were a business traveler, the aggressive reminder that the gate agents wouldn't hesitate to randomly select me to physically yank off the flight would make me think twice about booking travel on United to get to important meetings, just saying. And I know that that isn't "reality" - but remember, the perception in this case is much worse than the reality, just look at these hilarious memes:
This one is slightly NSFW, so I'll
link to it.
Here's one I find particularly funny:
What kind of financial damage to the brand is the result of a crappy decision to escalate? Did someone even think about this sort of thing? I doubt it - and yeah, this will all blow over in a week or so, but even if 1-in-a-million people change their plans because of this they've likely lost a lot more than they've gained.