There is another special case, but it's selling software in spite of the GPL; home routers, set top boxes, etc. Were they to use GPLv3 software, they'd have no way to protect against another company using their (potentially substantial) work on the software, building/copying the hardware design and creating cheap knock-offs within a few weeks of release, making it too costly to continue.
If a group of companies and individuals wanted to come together to build a new router platform where all would contribute back to it, but they could differentiate themselves on edge features, management interfaces, etc, the BSD license is good enough; and probably a better bet than the GPL.
Software that used to be sold commercially but was subsequently GPL'd , starving artist type programmers scraping by on donations (i.e earning significantly less than the median programmer salary for someone of their skills) or companies that produce GPL software but make money selling either support or software/hardware based around their GPL software (that itself is not GPL) don't count.
Companies that sell software generally have services divisions as well. My company sells software for large amounts of money, and we have a separate division of the company that sells services.
If a company exists to make money, why would you discount one of their profit centers as invalid because of another of their profit centers?
