There is a lot of different aspects to bitshares. Too many to cover in a comment. From the concept of DAC's (Distributed Autonomous Companies) that have delegates / employees that are paid by the blockchain either through share dilution and/or transaction fees. Bitshares is the first DAC and can be thought of as a bank / brokerage. PeerTracks/bitsharesmusic is the music DAC that just had a ICO see http://www.peertracks.com

To DPOS (Distributed proof of stake) VS bitcoin which is Proof of Work.

It also has distrubted DNS (in the works), a voting platorm (in the works), User Issued Assets (think companies issuing employee stock on the blockchain), BitAssets (stable coins that track a real world counterpart backed up by 3x collateral such as BITUSD).

Some good links for info

http://bytemaster.bitshares.org/ https://bitsharestalk.org/index.php http://www.bitshares.org http://bitshares.tv/ http://www.bitsharesmusicfoundation.org/