...Dr. Granger is very well equipped, especially with the aid of the Qatar loyalists, to find a longer-term solution to tiberium (for instance, to create a functional Tiberium Control Network without Kane's help).
The tricky bit is that making this happen is inevitably a long range project that's probably going to take until some time in the 2060s. We're realistically going to need to research Scrin and Nod technologies- it might have
really helped if we had the Tacitus, but our military wasn't strong enough to keep it out of Nod hands, alas.
And importantly, we need to
not get fired while all this is going on, because our likely replacements are either going to be (1) tiberium-denialist free marketeers who don't see a long term problem that needs a solution beyond "just build more harvesters lol," OR (2) more interested in resolving the problem some other way ("just blow the shit out of Nod and then we can surely figure this out" or "let's just evacuate the planet, fuuuck this is bad")
So if we want to beat tiberium while remaining on the Earth, we're gonna need to make sure we can
stably pursue that policy... and we should probably include "lifeboat for humanity in space" as a backup option just in case.
Tiberium will overrun Earth eventually, it's just a matter of how long it takes. This is primarily a function of abatement and mutation in Tiberium. We don't have any influence on the mutations, we just have to hope we don't don't get bad rolls. What we can control is abatement, and this is what we need to protect our industry for long enough to build self-sustaining space infrastructure, and to protect as much of the population as possible until we can evacuate them to orbit and the moon...
Or build a workable tiberium control network.
We know that should be technologically possible because something like it was done in canon, after all.
For me I view the RZ containment as being much more valuable than YZ containment right now given while the yellow zone can be pushed back and the land made usable again, pushing back the red zone just leaves barren land that isn't worth much of value. So every point the red zone advances decreases the usability of the Earth, and that sort of permanent damage should be neutralized where you can reasonably do so. You also have to remember the politics of it too as currently the vast majority of the population thinks the Earth is reclaimable and can be made whole again, so stopping the advancement where Tiberium is strongest should register with them.
I mean, that depends.
Do you expect them to respond more to the prospect of reclaiming places with strong tiberium that are far away that have been lost for a long time, to a standard of "reclaim" that involves "they were once on the fringe of a Red Zone, they are now deep in a Yellow Zone, and you'll still catch tiberium lung and die if you go there without putting on a hazmat suit?" Because realistically, that's what it involves when you 'reclaim' land from a Red Zone and turn it into a Yellow Zone.
Or do you expect them to respond more to the prospect of reclaiming places
they live, or near where they live, or where they lived until recently when the prospect of living in an expanding Yellow Zone forced them to move, and making those particular places truly clean of tiberium exposure? Places that (at least, we note grimly, until tiberium mutates into a form we can't abate) are
actually safe? Because that's what it involves when you 'reclaim' land from a Yellow Zone and turn it into a Blue Zone.
Especially given that this isn't truly an either/or choice, it's a choice of 'which do we work on first, and which second' on a timescale of
months?
I think you view this too much as a thing where people derive abstract satisfaction from an abstract process, as opposed to a practical problem that affects their lives by overrunning or threatening the places they presently live.