Arri Stockholm Syndrome.I have an EPIC and Alexa and use the Alexa 99% of the time. It has nothing to do with workflow, post houses have both workflows down easily. It's simply the image. Also, my Alexa shoots 120 fps using the entire sensor which would be my pref over cropping the sensor. 300fps crops the sensor so extremely I consider it unusable. Would rather just rent a Phantom. Dragon will change this of course, but it will also still possibly be stuck with the "RED look". People like myself don't just pay 50-70% more money for an Alexa for the hell of it, there's a very good reason. Producer's reasons for asking for an Alexa is because of results. They don't care how lightweight an EPIC is, or how much you didn't have to pay for upgrades, or how good the community is, or how often Jim posts in the middle of the night. The Alexa has an amazing look and that is all they care about. I feel the same. I wish my Alexa was as lightweight and small as my EPIC, but the image easily makes up for it (and not needing to deal with fan speed management or needing a Pro I/O module helps a lot as well).
If you love your RED camera, then love on it all day and rejoice in the fantastic technology at a fairly cheap price, but I wouldn't go making assumptions on why other people choose the cams they choose. Just putting in my 2 cents as it bugs me every time I hear people give what I feel are false justifications why they think people all don't use REDs all the time. There is no "Alexa problem". RED is leading the way for getting a lot of stuff for less money (although BlackMagic just made a major dent in that ratio) and ARRI is leading the way in best image. Producers would rather the latter as they aren't camera owners. Same with colorists. They like that the image looks almost perfect straight out of the gate rather than messing with secondaries to get all the colors in order and that saves a lot of time and money. There are many, many reasons beyond things that RED owners enjoy about their cams. Many things to consider. No camera is THE answer. I wouldn't see it as a problem that you can't get everyone on the planet to use the same thing you own.
Personally I don't care if the Zacuto tests exist or not as I can do my own Red vs Alexa tests all day in my pajamas. But I certainly don't understand what all the animosity is about it.