From eWeek for June 20th, 2005, "Driving Progress":

"Open source challenges the commercial software industry to add value and innovate. It eliminates the 'easy street' of charging people a lot of money for something that doesn't have much innovation in it." -- Joe Alsop of Progress Software Corp.

That's pretty much it, bang on. Open source doesn't do too many fancy tricks, or at least not many fancy tricks that are new, but it does do a good job replicating what's been out there a while. If you don't make it new, open source ensures you're not needed.