Having the power knocked out for several days IS that bad. Without power the servers are offline and no long running whatever services they were meant to be pr

Having the power knocked out for several days IS that bad. Without power the servers are offline and no long running whatever services they were meant to be providing. This means lost money for whoever those services belonged to (and lost money for those people's clients, potential lawsuits, etc). Preventing this sort of downtime is precisely why many businesses will host in a professional datacenter instead of "in house".