It hasn't. And there is yet another thing that hasn't been priced-in or calculated, which is highly relevant with this...

Most coin threads discuss about Blackcoin-type-multipools and how they should have their own multipools of this type or how mining-other-coins-and-dumping-them is so bad for the mined coins and so good for their own coin which they buy with the profits of dumping other coins, etc etc.

The block reward formula of Darkcoin (decreasing reward as the hashrate escalates) allows it to BENEFIT from Blackcoin-type-multipools that mine other coins and dump them. For when, say, a blackcoin or whitecoin sends hashpower to Dark, then they are reducing DRK's inflation and thus elevate the price of current coins.

The same is true for FPGA's, ASICs, etc. Other coins panic, DRK says "bring them on", we'll reach minimum block reward sooner / the total number of coins will bottom out....