Too late to buy some Darkcoin now?
If you buy now there is never too late, the drk will hit the prices never seen yet.... just wait and look....
If just 1% of the transparent market (that's all altcoins + Bitcoin) move to the private/anonymous market, then out of the 10bn market cap of the transparent market, there'll be a 100mn market cap for the private/anonymous market to be claimed by anonymous coins (drk, zero, anoncoin, clones implementing zero/darksend etc).
If there's more government crackdown on Bitcoin and the likes, then the 1% will go at least 10% and we're looking at 1bn market cap for anonymous coins as users try to escape government suppression, asset confiscation etc.
These aren't projections for the next day or week though.