One of the hallmarks of the future will be currency uncertainty. Whether that takes the form of inflation, deflation, devaluation, revaluation or a combination of these is unclear.
However, people are experimenting with new forms of currency (and they aren't state issued/fiat).
Take the example of Bitcoin.This is an e-commerce currency that is privately created and supposedly designed to guard against the shenanigans that befall fiat currency (inflation, etc...).
As this article points out, freeware Linux was thought to be unworkable as well.