I second the comment that no one would take IBM Cloud. My goodness - what a bunch of smoke and mirrors that contraption is. Everyone in the market knows this.
For the GTS/GBS - same as others have said- only people buying this stuff now are the Indian sweatshops. You won't last long there if you don't fit into that mold.
No way would Oracle touch the Power side in a million years. They got burned on their Sun buy a decade ago and have not barely finished writing down and k–ling off all the parts of that business (less the Exadata related stuff). SAP has never dabbled in their own hardware or OS areas - they have huge partnerships now with the big 3 clouds (AWS, Google, Azure). Why on earth would they decide to spend on last century's technology to roll all that back?
Google possibly has some minor interest in Power, but how much they would need a bunch of legacy IBM'ers to help them keep that little sliver of an offering in GCP, is anyone's guess. I'd guess they will let it die, as it would anyway under IBM.
Storage is a HUGE loser. No one is buying that stuff in mass anymore. Look at what happened to EMC, Netapp, etc. Putting SANs and NAS in your datacenter right now is so pre-Cloud. Only stodgy old enterprises who are way behind the curve would be doing any of that on a large scale now.
All the other fluff businesses that IBM is in - AI, Watson, etc are just vapor. They all are failed or failing. Way behind the competition.
Sorry to sound so negative, but I really see IBM as a failed company in a bunch of really tough markets. I mean, how many good stories do you hear about HP these days? IBM is a few years behind them. A storied name from yesteryear for sure. But, talk about a company whose time has passed - they are new poster child.