i think you should read this small article: Intel facing challenge from Samsung.
i'll highlight 1 line from the article thats relevant to the buyout of Sammy's HDD section.
Samsung in 2010 made significant strides towards eroding Intel's lead in the semiconductor industry. It is the first time in ten years that Chipzilla has noticed a rival and it is largely thanks to booming sales of its memory integrated circuits.
now, why would you still invest in old age tech that bring in limited profit when you can go head on (& even beat) World's No.1 semiconductor company. to remind you, a ram company which i can't quite recall stopped selling ram to focus on SSD. this shows SSD = tons of money.
& i have a feeling, AMD might be Samsung's next target (rumors are already up & suggest Samsung plans to buy AMD).