Yeah in theory China is the biggest potential competitor, having both a space program, a state deeply involved in business, etc. But their space tech is archaic in comparison, using really nasty fuels to blast stuff into space. The reusability of SpaceX's rockets is a feat that is years ahead of the competition - it's been nearly ten years since the first recovered Falcon 9 booster in a commercial launch if my quick fact check is accurate, and no other competitor, private or governmental, has managed it yet. And in a few years they will have a reusable vessel capable of launching 100 tonnes into LEO, at a fraction of the development and launch cost of e.g. the Space Shuttle.

Unless of course Musk's political fuckery ends up dismantling SpaceX. But, Musk didn't do the engineering on these feats, so the knowledge and patents will continue on if he doesn't.