It has to do with the individual company and how their production line works, too. Especially for bigger brands in bigger factories, it's much more efficient for them to just tune everything the same way. Case in point, I got a pair of Bent Chetlers a couple of seasons ago that came with a full-on race tune. You could literally cut your fingers running them up and down the edges. Annoying as that was it made sense given that just about everything else in Atomic's line is a race ski. They're not going to take the time/money/effort to add a special step to their production line for just a couple of models. For someone like Armada, in the case of the OP, they're fully integrated into the Salomon/Amer factory world at this point. Their skis aren't going to get the specialized treatment they could have when they were a smaller, indie brand making product their own way in much smaller batches.
It sucks because it feels like the company either doesn't understand what you're doing with their skis or the just don't give a shit, but it's mostly just the reality of manufacturing at scale.