I think this is an issue with software developers. They think "if I just build it" but I look at that story and think "they weren't really serious. The other developer probably gathered a team of 5+ people and together they did all of the things the lone software dev didn't want to do. Sales, Marketing, Docs, Websites, sign up, customer service, etc etc etc.

I can ship a library or a demo or a small stand alone thing but it can be 10x commitment to actually ship a real service. Deciding to actually do the other 90% of the work is a pretty big hurdle for many, me included.