This is not at all correct, they're posting operating losses and it has nothing to do with building purchases. They're losing money on their business.
Cash spend is not included in those losses. 18 months ago Nintendo had 10.5 billion cash on hand. Now they've got 7.4. They spent through 3.5 billion dollars in 1.5 years. Company losses have not been this large, this was spending. Including 1.2 billion on a pointless stock buy back. The building was not part of the operating loss.
Additionally, losses tend to snowball as failing businesses do worse year over year. The WIi U eats through all the money that the 3DS "prints" and then some. Have you even looked at their financial reports are you are just parroting what you read on fan forums?
Our definitions of "pointless" differ, apparently. I am by no means claiming to be an expert on the specifics. I am just noting that there have been several expansions made lately. And no, I read "gaming news". I'm not sure where in my post you found anything that would be said on a "fan forum". It's my own belief that they are "okay", not good, not great. I even said that the hardware is selling poorly (the Wii U, the 3DS is doing okay, not a blockbuster hit like the DS, but that's a given). They need to fix things, but they aren't doomed. As nonsensical as Nintendo can be, they aren't stupid enough to be buying buildings and recruiting new hires to Retro and IS if they were really bleeding that badly. They weathered the Gamecube, and they'll weather the Wii U with how well the DS/Wii did just like Sony weathered the PS3 with the PS2. If their next home console is a dud though, well... that's another story.
One could argue that if not for the cash spent on those things, it could have been spent towards addressing the problem of the Wii U. I think they have their priorities a little out of whack, especially with the lack of marketing in America (aside from the stock buyback, which I still don't think was pointless).