because nintendo could take that money and make the games that are actually selling a lot better
And why on Earth would they have to do things that way? As a gamer, you should be happy that they saved a potentially GOTG-level game that was cancelled by its original publisher. That's all that matters.
imagine wii sports resort with each mode having a lot more content (for example the skysports mode alone to have content equivalent to pilot wings resort). i adore those games but they also could make them a lot beefier more jampacked etc.
Dear Beelzebub, no, Nintendo doesn't need to put any more money on WiiSports.
Also, Nintendo publishing Bayonetta 2 is IN NO WAY money away from shit like WiiSports. Game projects have budgets that are decided independently from other projects. It doesn't mean Nintendo will spend less money on Zelda Wii U just because they decided to pick up Bayonetta 2. Game publishing & development simply doesn't work that way.
also yes i do think nintendo needs to grow with the strategy they have. their strategy is to be a full content provider for a platform. they can do that if the platform has a userbase like gamecube but they cannot if they have a userbase like wii. since they are totally capable of selling numbers like wii or ds they should definately aim to release such variety of games on their own to pretty much satisfy most of the gamers tastes rather than supporting third parties that will jump ship the first opportunity they find
Sure, they could use a bit of growing (and AFAIK, they actually have hired more people), but that doesn't mean they should not pursue any cooperation with 3rd parties. The fact is, they can't survive with 1st party efforts alone. I certainly wouldn't have purchased any Nintendo platform if I knew I'd only be getting games developed by their own teams, stuff like Sin & Punishment 2, Little King's Story, Muramasa etc. were more of a reason to own a Wii for me than Nintendo developed games (and I LOVE Donkey Kong Country Returns, Super Mario Galaxy 2, Xenoblade & the like).