One would think that! But, the history of alternative money systems is littered with attempts to share software; none have ever worked to my knowledge. It was certainly the biggest mistake I made, it's unworkable to even give away software for lack of common agreement, let alone sell it.
The only sure-fire way to make money with software is to pack it inside working hardware and sell that. Beyond that its a crap shoot.
I guess this is because money is such a complex subject that nobody can agree on it. It is like the proverbial elephant and the blind men. All are holding a part and will not agree on what they feel. If you put the Strohalm people in a room with the Paypal room, there won't be a single point of agreement, and I wouldn't agree with either of them :)
What is money but measured agreement? Its no wonder we are experiencing economic difficulties; we don't as a society have a common-enough reality to all agree on right now, to make it worthwhile the trade! The general disaffection we large number of people feel with each other (as represented by trade figures and market indexes and so on) costs us all a great deal, but the question always begs to be asked: from where can we gain salvation? Innovation and daring success, thats where. Save us, hacker! ; -- Jay Vaughan