I think it is a brand recognition / perception thing. My theory is that Mesa Boogie is successful because of their contribution to high gain tones. The company is known for their flagship Mark and Recto series, both of which are specialized crunch tones.
Guitarists I speak with who are unfamiliar with the brand consider Mesa to be a high gain / metal amp company and they cannot conceive that this company would make amplifiers for any other sort of applications. When I was at Steeles L&MQ there was a guy who was a considerably good blues player. He complained his Fender Deville was too heavy / loud and he wanted something lighter and more portable. He was demoing a Traynor and I suggest he try the Mesa Boogie TA15. He says "Aren't Mesa amps high gain?" I said "Just try it, you might be surprised." He sees the control layout on the amp and says "These controls are so complicated, I'm a plug and play kind of guy." I power the thing up and start dialing in tones. His jaw drops. He says "This is a fantastic recommendation." Then he checks the price. "It's out of my budget. It's a grand just for the amp and I'd have to get a cab. Those are my BMW payments."
This is the general perception guitarists have of Mesa; too expensive, too many features, lots of gain for Metal.
On the other hand, you talk to Mesa users and you discover that they really LIKE the loads of gain. The Electra Dyne has plenty of gain on tap but for most Mesa Players, it is not enough. Talk to any of them and they say 'It doesn't have enough gain.' Meanwhile, they miss the whole point of the amp. This is like Wendy's attempting to sell Sushi. Wendy's is known for burgers and to serve a vastly different food type would raise questions for customers.
My conclusion is that the amp is 100% right but the brand is wrong. If it had the name 'Fender' or 'Marshall' on it and it was several hundred dollars cheaper, I bet this amp would be everywhere! Oh well, perception lags reality so perhaps guitarists will figure out that Mesa is doing more than high gain these days!
As far as I know, the one Electra Dyne that Steeles Long and McQuade has in stock has been there for over a year for sure, and possibly two. I was seeing that this amp was a commercial dud and I snapped one up before they are discontinued. I figured, here is something I love that can be a unique voice for me. Unlike the Dimadozen Recto, this is something really personal and special and I'm **** glad I got it!