[gtsteve]

For me, it's down to timezones. On a remote job advert I said I'd consider developers in Europe due to timezone overlap and an American developer e-mailed in saying, "but what if you just naturally get up really early". I hired him, it works just fine.

[diehunde]

I think this is one of the main reasons. I work in the US and big part of the team is located in India. It's very complicated to find time for meetings or if you need to reach out to someone from that team.