Lack of redundancy due to cost probably has something to do with it.
Same issue with internet peering in quite a few cities (no viable 2nd location, costs a lot of money to double up the gear, additona optical transport).
Not to mention that in far two many places the second location is on the other side of the river from the first.
I was in finance when I looked up the physical address of our back up data center which was in another city ... 5km up stream from our main data center, both were within the 30 year flood plain of the river.
I was in finance when I looked up the physical address of our back up data center which was in another city ... 5km up stream from our main data center, both were within the 30 year flood plain of the river.