This is also based on the assumption you are in a client/service business. However as someone with a startup in Thailand the timezone is always the first point

This is also based on the assumption you are in a client/service business. However as someone with a startup in Thailand the timezone is always the first point of contention for most of us, So not disagreeing with you on that point. Not having a US number can also work against you when trying to set up meetings with partners, you get put at the bottom of the call sheet always.