1) Despite current going rates, the original Minimates Max polystone statues sold very poorly. They never released wave 2 due to sales and lack of interest. Before they went up in value they were clearenced out at a lot of places.
2) DST doesn't have the Marvel vinyl license (Vinimates scale) and doesn't have confidence that the Gallery scale statues in Minimates style would sell through. Remember, we can't even get 2" Marvel Minimates convention exclusives anymore, so they aren't going to take any risks on $40+ vinyl statues of Minimates.
3) DST doesn't have the Marvel bank license, that's Monogram.