As much as I am a fan of Mesa Boogie, I do agree that they are kind of shooting themselves in the foot as far as moving product. That said. Their stuff is still built in Petaluma, CA USA, at least AFAIK. I don' think they have done any expansion of their construction facilities at least not in the time between when I used to work across the street in the 90's (at Lagunitas Brewing) and when I toured there as part of a Talkbass meetup a few years ago.
So I'd gather that Randall Smith and co are comfortable with the size of the company as it is. I'd also point out that their main thing is selling tube amps. The bass amp world has kind of gone away from tubes in general and more towards ultralights. I'm getting older myself and can no longer shoulder a 50lb amp just for the tone. Good to see Mesa are making some lighter bass amps, but I think their core demo of bassists still prefer tubes, or at least a tube front end.
PS I kind of skipped over their recent tube bass amps because when I was on the Talkbass meetup thing at Mesa, I plainly saw chips in the tube amps. I'm not some kind of tube worshipping purist. But I don't see why you need to stick those in there. I guess there is no easy way to do a graphic EQ with tubes (at least without adding several more sockets of tubes!). So I'd prefer they just stick to a pure tube amp with no graphic EQ. Though to be fair even the Bass 400 has transistors in the graphic EQ as well. But they weren't chips.