@Suiseiseki

> There is a protocol whitepaper, but it's really mostly documented via source code.

Well, sure, but there's a process for community-driven protocol changes. No one can force anything, BCH forks off from BTC, etc. It's not just open, it's open all the way to the bottom.

> You don't need to run proprietary software to receive or make use of cash.

The issue with proprietary software is that you cannot modify it: you cannot make it do what you want, and you are beholden to an external authority that controls the software and dictates acceptable use. Cash is no different.