For some it might be important, that - I assume - OVH is in the EU and compose.io is in the US. Some of my clients care at least.
[1]http://www.nextinpact.com/news/98651-ovh-mise-sur-personnali...
AFAIK, one of the reasons OVH had for not setting shop in the US a few years back, but choosing Canada instead was to not expose its flank to possible actions by US agencies. They even feared "contamination" to their EU based datacenters.
I guess either the law has changed or their lawyers found their way through the arcanes of international law, since they are now officialy planning to open a datacenter in the US.