Re: Democracy? There are no democracies here
If you check through the occasion postings of who contributes to Linux you'll find that "big commercial outfits" are the major contributors.
"Of course, I'm not expecting Linus to be able to magically resolve all this overnight"
He and the other source tree maintainers seem to have been resolving things on an ongoing basis for a long time. The system of having a single maintainer for a source tree has emerged as a very good solution to Brookes' problem of coordinating the work of a multitude of developers. In effect the FOSS maintainer has become the equivalent of architect.
"It's just that the situation makes it more and more inevitable that the Linux kernels we actually run and use day to day will end up in the hands of big business"
The kernels we use every day, as derivatives of the project's kernels, are in the hands of the distro maintainers - some may be big businesses, some not. The whole thing works OK. Red Hat can play all the ricks it wants but the only way they can have a say what ends up in my Devuan kernel is by submitting contributions to Linus, getting them accepted by him, accepted by Greg into the LTS kernel and then into Debian. Even then there may be changes during the life of an LTS kernel. None of this needs copyright reassignments.
"other similar projects - e.g. FreeBSD - don't seem to suffer anything like this level of disagreement"
They're smaller projects, they get less media attention to blow things up out of proportion and the nature of the BSD licence is such that if a big - or small - business wants to take a BSD kernel, modify it and keep the result provide they're welcome to do so because the licence allows them to do so. The GPL doesn't allow that with Linux whatever RHEL may try on.