"We don't care that homebrew on the 3DS doesn't let you pirate games, we're going to issue several updates to block it despite the fact that if anything, it will drive up sales of the required game that would help us turn a profit after a long period of being in the red. Instead, we're going to take that game off the shelves and take it off our online shop so you don't get to have access to the custom content that you've been wanting since 2011 but we're too lazy to make ourselves. Until we do decide to get off our asses and make these things by the end of the system's lifetime, only to have the process recycled with the next system, you're not allowed to use a perfectly legal exploit for custom content. We could be charging you money for a SNES emulator or Minecraft on 3DS but instead we're going to put unprofitable time and effort into patching out an exploit in our system that could potentially benefit both us and our customers, whether it be in sales of Cubic Ninja or people buying 3DS systems for homebrew purposes."
Nintendo in a nutshell.