I'm not saying it's done as an enterprise.
I have been lightly checking out used Markbass gear for the past couple months.
The owners are nearly 100% on to something else that has the same general packaging.
They are buying into voicing that's brand identifiable like Mesa, GK, Genzler, Ampeg, etc.
They are not selling their gear bc the unique voice of their MB gear is so overwhelmingly servicing their needs.
You can however scrape used FS ads and stream them for analysis. My buddy built the system Audi uses to publish their offers.
We just don't work in industries that aren't impactful enough.
Levi's has this problem, so they have to run their applications in house bc no one really wants to spend the time to work on Jean brand identity.
The GAP has this issue as well, no one with a credible skillset cares enough when healthcare, tv/movies, or video gaming is just more interesting data to work on.
Well, I may think that you are over-thinking a bit on this, but that's totally cool, I'm not to judge!
My LM800T isn't for sale and will not likely be. I have some superlative options right at hand in my studio, inc. Tec-Amp,
Quilter, G-K, and that's just the micro-heads!
Every one of my heads, in conjunction w/ every one of my cabs, in conjunction with every one of my basses- has but (1) purpose- Which is to give me the flavor and output to sound like me, my attack, my groove, and my approach.
I wouldn't care to state why any other MarkBass owner put their unit on the block- Maybe the colors gave them a cataract; who knows!???

Lots of peeps here move on! As soon as the next product is available, they get GAS. I get that too. "The grass is always greener" feeling.
Mesa's working on some new stuff, so I hear- Wait until that is announced. Stampede! Check the classifieds for ...whatever!