Certainly it would be reprehensible if the MAE-E core
infrastructure (that which MFS owns/runs) wasn't backed up.
However, I believe it is.
I do not believe that it is the responsibility of MFS to provide
power to individual's equipment that is co-located at the site.
If reliable power is not considered an essential part of facility
infrastructure, how would you suggest that tenants get it? I think
that the incident at the WilTel POP in Santa Clara, CA, is sufficient
to prove that having individual tenants each supply their own
(typically small) UPS is a Bad Thing - the power was out long enough
to drain them to zero, furthermore (this part I have second hand) some
of them didn't take well to being flatlined like that. If everyone
were left to solve that problem on their own ... well, imagine
everyone jockeying to park their trailer-mounted portable generator
near the door. Yow.
Do you feel the same way about air conditioning? Security?
I believe that things like power, AC, and security (all reliable) are
an essential part of a facility's infrastructure (and that's why PAIX
has them). When engineered on a facility-wide scale you get a stable
platform on which to build up successive layers, and you get economies
of scale by solving the problem once for everyone.