I guess 'open source' narrows it down too much, but a bunch of guys who go around trying to 'do less' ( http://gettingreal.37signals.com/ch02_Build_Less.php ) can't be that hard to undercut as far as their products are concerned (they would be very difficult to beat, though, in marketing terms). You could offer a product that people only have to buy once, for instance, instead of slowly bleeding them month after month.