They'll just sit around counting their money and not releasing Bank.
Which is strange, considering that the Bank has a subscription fee (thus, would guarantee even more money). Then again, Nintendo itself thinks it's not necessary to release SNES/GBA games over the 3DS' eShop.
They must be allergic to money --- "Many of you feel bad for this lamp...That is because you're crazy. It has no feelings! And the new one is much better." (IKEA's Lamp commercial)