DME was a nice perk. Luggage handling was fantastic.I'm aware that Mears always owned them and that it was easy to take on the task. That's not what I've been saying. I just think its strange that Disney used a poor excuse over why they were no longer going to be using Magical Express, instead of charging for it first, or just saying there was a contract dispute. But saying that less guests were using the busses and using Uber just isn't true. More people were using ride shares than before but guests still prefer to take those buses and are willing to pay for them. Thus, the success of Sunshine Flyer - and it appears more people preferred to use them than Mears. And Mears was able to recently acquire Sunshine Flyer. The demand is there. Especially now that those buses will drop off at non-Disney owned resorts. Why would someone stay at the Boardwalk Resort when they can stay for cheaper at Swan and Dolphin? The perks of staying at Disney owned are fading through Disney's own actions. The result of that is that more people are staying at non-Disney owned resorts for their trip. Which is taking money out of Disney's pockets. It's an odd decision for a company that seems to like to nickel and dime their visitors these days and who used to want to keep guests on their property for the duration.
BUT I don't agree with many of your points
Many, if not most, guests like the non stop service offered by ride share
Charging for DME would likely reduce ridership. That would result in more stops or pax having to wait longer for bus to be dispatched.
Was Sunshine a financial success? I assumed Mears takeover meant there wasn't enough business for 2 companies