I think Nintendo would be able to manage getting a good price per gig on 32GB and 16GB cartridges. They have massive demand (a vast amount of Switch 2 games are under 16GB) as well as close historical relationships with flash manufacturers. In addition, I wouldn’t be surprised if those sizes were still mass produced at low prices for embedded or industrial computing use, even as consumers move to larger storage media making consumer SD cards at those sizes more expensive per gig.