Nintendo and third party games are simply a failed marriage. The offspring of that marriage more often fails than succeeds. So third parties are very careful with releasing games on Nintendo systems. Now in general third party developers are fine with pc/ps4/Xone. But every now and than there are whining gamers which think that third party games must release on Switch and get sour if they don't and that's where this discussion comes from. Third parties litteraly fled to playstation during the N64 era so Nintendo has only to thank itself for its current relationship with third parties and considering it's way less difficult to transfer a game from PS4 to Xone (basically the same system anyway) than PS4 to Switch is going to take a while before third parties are going to really support Switch. If Nintendo wants third party games they need to have a system that is appealing for third party games which means easy porting and Nintendo doesn't provide that. Because there are few (new) non exclusivr third party games on Nintendo systems. Most owners of these consoles will not buy those games and buy Nintendo games instead. So third party studios in general choose to not take the risc or make an exclusive game for Nintendo with minimal risc.
Please excuse my (probally) poor grammar
