Buy a copy of CS6 and only pay for LR thru CC or if they continue to use retail copy's. you can convert your RAWs to DNGs later on to continue editing in CS6 for years.
That's my plan anyway.
if you already have LR3 or 4, and PS as CS 3, 4, 5, or preferably 6, then those of us who only use it occasionally or as a host framework for plugins are just fine for as long as we care to freeze our workflow.
As long as you can export your raw file into DNG or 16b TIFF you can continue to do a lot of work without really changing workflow. DPP, ViewNX, DxO, C1 and other 3rd party raw converters are there to do that.
I froze my OS and my PP software a couple years ago and despite what cameras I added it still allows me to continue working the way I'm comfortable with for years to come. I'll be taking one more iterative step with OS, PS and LR4 and then that machine gets locked down, no more major SW updates.
If you gotta have some g-whiz new feature then you're gonna have to keep payin' for it unless some competition steps up to take the place of PS.
I know the tech already exists, it's just not well marketed yet. Hopefully the authors will take this opportunity to push their software to improve customer awareness.
For some of the plugin suites, like Topaz, they already have a basic framework that allows standalone use. I think this kind of functionality may become a little more commonplace.
GIMP, and Corel and some other small players will now get some extra attention and hopefully improve feature sets and usability. Adobe's CC move is going to cause a bit of a shift in the whole ecosystem.