The Enterprise Is Wrong, Not Mozilla
There's been a lot of noise about Mozilla's new rapid release leading to
conflict with Enterprise users.
Kethinov found an Ars article that points out that "Now that Mozilla has released Firefox 5, version 4, just three months old, is no longer supported. Enterprise customers aren't very pleased with this decision, and are claiming it makes their testing burden impossible. We're not convinced: we think Mozilla's decision is the right one for the Web itself.'"
Have they addressed the fact that Firefox eats memory like Amy Winehouse smokes crack?
If the business uses automated acceptance testing, this would is not a big deal. Just run your test suite on the new version and you will know in short order if there is a problem. I think this is really what Mozilla is trying to say: use better development practices and you won't have an issue.
If you find that testing that it is cheaper if you all put some money together to found a small foundation which has the purpose of continuing another development branch, just do so.
I imagine if it takes that 50% people *more* to test it, then just use 25% of these people and put them in this foundation to bug fix and security fix old versions.
Nobody is stopping you from this (at least no the licenses).