What the expression “with #Bitcoin you follow rules instead of rulers” means:
Everyone voluntarily agrees to the transparent rules that everyone voluntarily agrees to.
Compared to:
Everyone MUST agree to the opaque rules that a small set of rulers have agreed to.
The result:
ALL THE USERS OF THE SYSTEM INCENTIVIZE ALL THE USERS OF THE SYSTEM TO KEEP THE SYSTEM OPEN, HONEST, DECENTRALIZED AND SECURE.
(And therefore it will never be gamed or ever die)