This is such an odd reasoning to me. Why do you buy consoles, to play games or to put the box in a glass cabinet and look at it?
If you love Platinum Games and a system has exclusives from them, shouldn't that make you interested in the system? Especially since you think it will be 'tough not playing it'?
Platinum games are also not huge sellers, and it would probably not be that easy go find a publisher for the other two systems considering the higher cost of development, I imagine. No one but Nintendo even wanted to fund Bayonetta 2 and that was for the old consoles at the time. The industry is getting more and more homogenous if the shooter and sports fest at E3 is any indication. And here comes a publisher and gives these rather niche games that you like a chance and you are not interested only because they're not on the platform of your choice. I understand not outright buying the system but if those games don't make the system more interesting to you, then you don't love those games as much as you claim to begin with.
I buy a console based on past, current and future releases, not just for 1 or 2 games. I buy consoles to play a lot of games, not just one or two. If the WiiU had more games I liked besides the PG stuff, I would buy one. Every once and awhile one game might sell me on a console, but usually that system already has more games I want to play or has many future releases Im interested in. Right now the WiiU has no games I have any interest in and only 2 future games from PG. I know Nintendo first party games are coming, but they dont interest me.
I dont connect with Nintendo first party offerings any more, well I should say their first party content on home consoles. I love my DSiXL and 3DS mainly because it has a ton of 3rd party support as well as a few first party games I like. I tried giving all the top rated games on the Wii a chance for several hours and I dont enjoy many Nintendo games any more like I did when I was a kid. I might buy a WiiU to play Bayonetta 2 and then give it to my nephew, but action game fans would have to give it very high marks. In the Bayonetta 2 thread from E3, I already said Im really disappointed in Sony for not funding the game, but they have passed up some quality games in the past like Demons Souls in the US. Nintendo money hatted Bayonetta 2 to get peoples hopes up that more quality 3rd party software would be on the WiiU. E3 WiiU 3rd party support was pretty slim and I dont see it getting any better when the new consoles release, the only hope is Nintendo pays for more 3rd party games, but I cant imagine they will spend a lot of money on 3rd party exclusives unless they are cheap.
Im done buying a Nintendo console because I really want to play one or two games and I hope more quality 3rd party games make their way to the system, Ive been down that road too many times and it never works out. Ive been burned too many times hoping Nintendo would attract future 3rd party support, even when they have the top selling console they have a tough time attracting good 3rd party support.
I can see why people love a lot of the first party Nintendo games and I dont blame them for buying Nintendo consoles just for those games. The art is great, the games are very polished, but for me personally I just dont enjoy playing them like I did when I was younger. I dont hate Nintendo, I just dont enjoy playing the majority of their games. Xenoblade was top notch, but that is a rare 3rd party iirc and one out of hundred of games on the Wii. If I dont like playing first party Nintendo games, it is a bad decision to buy a Nintendo console imo.