It has contracts with two different power companies, and it has a back-up generator on the roof and another in the basement. The rooftop generator has a different fuel tank than the basement one. There are four air conditioners, one in each corner of the data center. And so on. A facilities based telco can't do this.
Exodus can, because it buys facilities from all comers.
Reliability emerges at a different point in the value space. Once upon a time, telcos mediated Physical Diversity for their customer, but competition and the resulting drive to lower costs made it prudent for them to stop. Customers can still buy Physical Diversity in the age of telecom competition, but they have to do it piecemeal . . . Exodus REmediates by providing one-stop shopping for Physical Diversity. Gentle Reader, if you are still asking what is the relationship of the Y2K Problem to The Stupid Network, I don't think I can help further.