Go watch Ron talks at this conference and Open Compute project. He and others have done an amazing to make sure its possible in the first place to use open fire

Go watch Ron talks at this conference and Open Compute project. He and others have done an amazing to make sure its possible in the first place to use open fireware. And you know what, its not just 'technical' it has to do with politics and community. If you want something 'specific' then I would point you to the Open Compute Project that has now basically mandated that certified servers allow consumers to install alternative fireware. That required a lot of effort and lobbying. At the same time creating a community of users and vendors that enable new platforms before they are even released. Go look at the coreboot git to see this work. The lobbying of the community has lead to AMD next generation boot firmware, OpenSil to be open source. Again, this didn't come out of no-where.