Reliable would be a strong word, but SpaceX has certainly demonstrated its ability to innovate and reduce expenses at the same time, which is a necessary condit

Reliable would be a strong word, but SpaceX has certainly demonstrated its ability to innovate and reduce expenses at the same time, which is a necessary condition to even entertain the idea of interplanetary flights. They also seem to be fairly concentrated on development of new vehicles and don't distract themselves with anything else.