The main issue is latency and cost. Try browsing the internet from New Zealand or Australia for a few weeks: you really notice the difference of being another 1

The main issue is latency and cost. Try browsing the internet from New Zealand or Australia for a few weeks: you really notice the difference of being another 150-200ms away from servers in the U.S. If you'd like to host in those countries directly you'll be subject to higher bandwidth costs.