James Surowiecki: Valuing the Free Digital Economy : The New Yorker:
“the welfare of a nation . . . can scarcely be inferred from a measure of national income.” For instance, most Web sites are built with free, open-source applications. This makes running a site cheap, which has all sorts of benefits in terms of welfare, but G.D.P. ends up lower than it would be if everyone had to pay for Microsoft’s server software. Digital innovation can even shrink G.D.P.: Skype has reduced the amount of money that people spend on international calls, and free smartphone apps are replacing stand-alone devices that once generated billions in sales. The G.P.S. company Garmin was once one of the fastest-growing companies in the U.S. Thanks to Google and Apple Maps, Garmin’s sales have taken a severe hit, but consumers, who now have access to good directions at no cost, are certainly better off.