It's been happening for an extremely long time actually, It's common practice for Microsoft and Sony for example. In any case it's stated in their TOS that they can and will do this at their discretion and you should probably assume every single game company has it in their TOS as well, so don't get banned?Why would Nintendo block access to their eShop to actually purchase games? That has to be one of the dumbest decisions a corporation has ever made.