This is very true, but I think a company that is open sourcing it's source code is the ideal breading ground for an open source project. A lot of the marketing

This is very true, but I think a company that is open sourcing it's source code is the ideal breading ground for an open source project. A lot of the marketing did already happen. This is especially true, if the main clientele of the company are developers. For other ideas, maybe a new team will actually pick up the idea and continue to work on it as a company. I am currently working a startup project and we found a company, that was working on the same idea for 3 years and ultimately gave up. We emailed them and are hoping that they can share some lessons, but imagine we they open sourced their code. That might have really given us a jump start. But then again, as a developer I prefer writing by own code from scratch, to working on someone else's (by definition) crappy (most likely) PHP code base.