MAE-East[1] was there, which means all the networks are there, which means it's a great place to put a datacenter. If you only have one datacenter on the planet, it should probably be in the US; the US has good connectivity to the rest of the world, and local customers with lots of disposable income. If you have one datacenter in the US, DC/Northern VA is a good place, near to the bulk of the population. If you have two datacenters, one on the west coast is a good idea. If you have three, Chicago or Dallas.

[1] https://en.m.wikipedia.org/wiki/MAE-East