Exactly, but there's not a single clear answer for this, it's just not sustainable, period. You buy Bitcoin because you think it will appreciate in the future, as with most other investments. If I could short sell Steem right now and cash out in 2017 I would be rich. We all know for sure it will dilute and therefore lose value. That's why projects with billions of coins/tokens maybe have a big market cap but a low price per unit.
Anyway most people don't even understand what's Steem, Steem Power, Steem Dollars, so they don't care and they think a blockchain creates "money out of thin air".
In the meantime the real questions go answered.