That will never work. You'll spend more time traveling to and from the remote launch facilities than you would flying conventionally from a nearby international airport. Destinations would also be severely limited by technology export laws; maybe it could be arranged for a handful of friendly nations / strategies allies like Japan or Australia, but most of the world would be scratched off the list.

When Shotwell and Musk talk about stuff like that or Mars colonies, they're hyping the company to attract more talent. If you loom at what they're actually building, it's all satellite launchers.