I don't know about 10x, at least in the short term. But there are upward pressures.
DEC generation is daily. Right now I think we are something like 940k plus whatever is generated through burning.
Most importantly, the 940k is spread amongst all active players during the day. So the more players, the less each player gets (proportional to their ranking).
So over time as the game grows, each battle will produce less and less DEC. That will be somewhat offset by card burning, but not completely.
Also over time, more and more players means more and more demand for potions, guilds, orbs, and whatever comes after orbs.
Lower marginal supply, higher marginal demand = higher prices.