There's a new trend "environmental branding" where you use the property as an ad - that could save this property:
When you emerge from the Harvard Square T Station, there is right now a ten-foot high, cylindrical drum with pay phones, wrapped in a Budweiser ad.
Let's estimate that Budweiser pays $1,000/month for that ad (seems reasonable given foot/car traffic)
Then, let's say the Out of Town News building can be re-imagined full of window-long displays for this Microsoft Media Lounge... each selling the different media products in Microsoft's line-up. In addition to the window displays, sidewalk sandwich boards, flags, decor, etc - you also have the well lit Microsoft signs on all four sides of the property - not to mention the publicity value of the store.
In essence, it is not a $5,000/month rent because you can amortize the "environmental branding" aspect of the property given its high visibility. This is how Times Square stores justify their rents.
You could argue if that one Harvard Square Bud ad is worth $1k, then this entire central store-as-ad is worth $3k/month even if you closed it and left it there as just an advertisement.
Now, the rent is cut from $5k to $2k/month. Many businesses could live there for $2k/month. That's why I view this as more of a branding opportunity for a corporation than a real business - especially considering there isn't plumbing.
Architectural purists are vomiting right now, but for some reason Boston's Citgo sign is "beloved" - so go figure.