[cortesoft]

I don't really have a problem with this sort of practice, and I think it is reflective of the model I feel most companies should use: keep the core-to-your-business software for your company proprietary and open-source all non-core-to-your-business software. It is the only model that will help keep open-source alive and well funded.

It is unreasonable and unrealistic to expect a company to open source everything it creates; there are legitimate competitive advantages to keeping that software to yourself. It is much easier to convince companies to share their non-core software, and companies will actually gain from doing this.