We don’t know the economics of this. It’s possible that they are ordering them in larger bulks now, which would reduce the cost. It’s also very possible that the 16 gig cards are simply cheaper to produce now, which would make sense given we’re two years into the Switch’s lifespan and flash memory cost has gone down considerably.
Another possibility is that Capcom simply has more faith in the Switch now, and are willing to take less profit per game in order to reach a larger market.
But here's the thing--I'm a huge Dragons Dogma fan (This is my fourth time buying the game!). They've even given it away for free on PS+. There's just no way it's going to sell well. Even I know this. Capcom put it on a 16gb card and didn't charge much for it. That says a lot.
On a different note, what the fuck is up with the servers for this game!? I can't ever get my character online! She needs to make me some money before I win the game.