This is something I've been thinking about a bit recently, but decided to look into it a bit more. One of the only ones I could find (apart from the obvious such as diaspora, though they don't seem to have a business model as far as I've seen/googling tells me) is SugarCRM, who seem to be doing quite well with a combo of GPL'd code and a commercial SaaS product built off that code.
I guess what I want to know is why is this such a bad idea that a lot of us, who are OSS advocates, don't follow this sort of business model (or another OSS biz model)? Also I was wondering if there are any famous casualties of companies trying this and it failing on them?
Much like Open Sourcing your code, running a poetry competition is unlikely to add enough business value to offset the resources it will take to accomplish.
Sure, there are guys on your team who really like poetry and would go out of their way to help organize the contest. And the poetry fans that happen to be your users would think more of you for doing it.
But at the end of the day, it's just not a good business decision, so you don't do it.