It's a fairly solid bet that the cash shop is handled by the publisher (SQEX), not the dev studio (CBU3)... as I've noted in other threads, there is a separation between the two, much like Sony and Naughty Dog, or EA and Bioware. The fact that SQEX doesn't brand the studio separately (and that Yoshi-P has somewhat more influence with the publisher than many dev studio leadership teams have) makes it easy to forget that.

And sadly, based on my own experience with publishers in game dev, a publisher caring more about the hassle of chargebacks in a cash shop rather than a game's community is very on-brand. And that's not on-brand "for SQEX", or publishers in any one region; that's just in general.

What's more irritating is that, as many folks have said, this won't really do much to make a dent in RMT. The only thing I've ever seen that shuts down third-party RMT is introducing first-party RMT, like EVE Online's PLEX or Wildstar's CREDD: an in-game object redeemable for game time, which can be purchased outside of the game for real money. Which is a cursed solution in some ways, but does generally kill off shady third-party RMT.

Changes like this are at best a mild inconvenience to RMT folks, while also being a huge hassle for the actual community. Making changes like that is a huge mistake... but a publisher choosing to make it?

That doesn't surprise me, though I wish it did.