[heimindanger]

The STEEM blockchain is not centralized, and the governance is done through voting witnesses (people running the steem source code). There are hundreds of people running it => https://steemit.com/~witnesses

Also the supply is not set to double every year, this source is completly outdated. This model was changed more than a year ago. Current inflation rate is 9.5% per year, reducing by 0.5% per year until it reaches 1% per year (I believe)

The coin isn't worthless at all... It's publicly traded at around 3$ today on many exchanges.

Lastly the quote about IPFS is mine, and I actually believe we will be able to make people seed the video they are currently watching through our embed player soon, thanks to the progress of js-ipfs.