People often fall into the trap of mistaking abstract/imaginary power for real/physical power. A recent example is playing out in well-known Proof-of-Stake distributed ledgers.
Summary
Bitcoin bridges the divide between abstract/imaginary power and real/physical power, thus making a system that is pure information (abstract) and yet physically secure, only breakable by directing a huge amount of real world, physical power and resources.
Source
Huge thanks to https://twitter.com/JasonPLowery/