https://steem.io/SteemWhitePaper.pdf
Demand is what drives prices, in reality, steem is slightly inflationary (much less than U$D) so it moderates prices lower than if there was a fixed supply like BTC. But steem is still going up due to demand. Watch what happens once we (steemit) goes public :D
Where did you get the idea that BTC supply is fixed?
It is growing, currently at a rate of 12.5 BTC every block (about 10 minutes)
http://bitcoinblockhalf.com
And btw, Steem is already "public" :)
Semantics...
BTC will never exceed 21 million, that is what I mean by "fixed". It has not been all "issued" as of yet, but it is capped at 21 million BTC.
Steem is publically traded, but I should have said STEEMIT is "beta" and one must be "approved" to join. Thanks for the clarity LOL! (post edited)