" Small companies... may only have one line of speakers, but they still work top down. "
Not necessarily.
I can’t speak for big companies obviously, but sometimes a small company will try to make one speaker to address one particular set of requirements, and then another speaker to address a different set of requirements, and so on. These two (or three or however many) models may end up at different price points, but that could be because they started out with different goal posts in mind.
Duke
expert on the inner workings of at least one small company