I think sometime its work like money and sometimes not bcz money used by every people every palace in the earth but bitcoin not.
But one day it will be act like money ...
Bitcoin is money, it was created with that explicit purpose, and it became an investment because now currency pairs are traded in the markets like any stock, just look at forex so it is not surprise bitcoin became an investment, but bitcoin it is not a ponzi scheme since it does not follow the principles that a ponzi scheme follows.