"Systems/infrastructure (-12%) is cyclic according to IBM, BUT power shrinking at 24% is a freeking disaster (That is definitely not cyclic) Don’t be surprised when IBM exits Power for a partnership IBM will have to throw in Storage to generate interest"
True this. You have to factor out the Z lifecycle to understand how Systems is really doing. Power is definitely in secular decline with no obvious floor.
HOWEVER - I don't see an exit strategy. Who would buy Power, other than maybe a bottom-feeding investment fund that wants to ride the maintenance stream all the way down to the ground? Including Storage hardware won't help IMO: there's nothing in there that's particularly valuable, and it just makes it hardware to find a buyer that wants both.
It's also IMPORTANT to remember that Storage includes some software, some of which is actually growing, profitable, and well-regarded. The strong parts of the storage software are already externally reported through Cloud, not Systems; and they might well be retained and moved to Cloud if IBM can somehow shuck off the hw side of Systems.