Of course. If you actually signed a contract saying "I will abide the law of this land". But not you, not me, not the ex-employees and not even SpaceX signed ever signed such a contract. They're simply operating under a set of laws created by a system which claims to be legit, but which in reality forces people to comply.
Your life would be crap in a hurry if you couldn't depend on laws being enforceable.
Laws and enforcement is not something that only governments know how to do.
Yes, they are. Any entity who makes and enforces law is, ipso facto, a government. An entity that doesn't do that isn't a government, even if it calls itself one. That's what governing is, and government is simply that which governs.
I suggest you watch this short video then, which explains how laws, protection and private property can be created and enforced in a free market: https://www.youtube.com/watch?v=jTYkdEU_B4o
Such as using government force to maintain private property and to enforce contracts.
Those two things things - private property and enforcing contracts - are goods, and it's not only government who can produce goods.