Blockchain distributed ledger technology is just beginning to reshape the world. Bitcoin is a huge part of this, the first "killer app" for blockchain.
But blockchain (especially Bitcoin) also enables a larger paradigm-shift, the Decentralization Revolution. Twitter censoring people? Decentralize it. Google manipulating search results? Let's make them more fair with distributed search systems. Elections being rigged because of closed-source, hanky-panky technology? Open-source, distributed ledger, all the machines will achieve consensus over each ballot. You'll get a receipt with a tx code or QR code to scan and verify your ballot was cast exactly as you specified. YouTube keeping virtually all of the profits that should be more fairly distributed to the content creators? Decentralize the platforms of video display