Getting out of the laptop business was not necessarily a good idea. The obsession with high-margin-only business that the beancounters have is short-sighted tunnelvision. Think of the blades-vs-razors metaphor. IBM decided to get out of the low-margin razor-making business without considering that it would affect sales of the high-margin blades business.
There are plenty of buyers who want to only deal with a single vendor for their IT needs. These are called "IBM shops" or "HP shops" or "Dell shops" or more recently "Apple shops" and when IBM got rid of their laptops, they k–led their ability to sell everything else (including high-end high-margin servers) to those IBM-only customers. Those customers went elsewhere (forever) to the competition. Similarly, getting rid of low-end low-margin servers had a cascade effect on high-end server sales and some customers went to the cloud ... where IBM is barely a player and losing market share.
I have never understood IBM's "product X is not profitable ENOUGH so we must k–l it" insanity. IT IS STILL PROFITABLE. Meanwhile there are companies that sell products at cost or even at a loss knowing that it gets customers into their ecosystem and will eventually lead to high-value high-margin product sales. Example: Apple recently update the iPod (yes the iPod) because that is their low-profit-margin entry point inyo their profitable ecosystem. Every child that is gifted an iPod today will become and iPad or iPhone and Mac customer tomorrow.
So IBM will continue to k–l off low-margin products without regard of the ripple effect into whatever high-margin businesses remain. This will continue until the beancounters are removed from running the company.