On most hardware, the closed source components come pre-installed. Just walk into any store and find a phone with a verifiable open source distro.
The real problem is that most people don't have the knowledge to compile a distro and load it onto a phone. Most people don't even know that's a possibility or that the distro on their phone isn't open source.
The real problem is that most people don't have the knowledge to compile a distro and load it onto a phone. Most people don't even know that's a possibility or that the distro on their phone isn't open source.