I love the idea, but I think the problem is that Bandai’s expertise is not in having really amazing 3D digital models but in being able to produce incredibly detailed pieces of plastic. So selling stls doesn’t really play to their strengths.
With places like Gambody and CGTrader already selling stls (which presumably they have absolutely no permissions from Disney/Lucasfilm/Marvel etc to make money from) I can’t see a big mainstream company getting into the stl selling space at the moment.
Fingers crossed they (owners of the copyright of the models) will work out the licensing and anti-piracy issues soon though! I feel like, whilst resin 3D printers are pretty user friendly already, they would need to be even more “plug and play” before a big company like Disney starts selling stl files. From a reputational perspective they wouldn’t want tonnes of people complaining about failed prints etc. Model making communities are probably a lot more willing to accept that they need to do some adjusting to make something work than the average customer. Maybe companies will need to provide “ready to print” files for each 3D printer, with supports etc all ready to go.