As I mentioned elsewhere, I could see it being something that new services are essentially required to support - if you can easily transfer your data between al

As I mentioned elsewhere, I could see it being something that new services are essentially required to support - if you can easily transfer your data between almost all services, the cost of using one that doesn't support the framework is higher, relatively speaking. However, I hadn't really considered how much easier it may potentially make it to move to a new service, so it may well end up doing the reverse, lowering the barrier.