WD has been making poor investment choices ever since 2007.
Silicon Systems - total flop, where did their products go? lol
Skyera - also a flop in my opinion
HGST - was good, especially enterprise hdd, but ssd is doing well, but not for long. Without nand foundry, they will lose as Samsung is killing everyone and undercutting the competition.
Velobit - nothing to show for.
Virident - nothing to show for.
And now Sandisk. Ask yourself this. Would any company doing "well" want to sell itself? Do you see Tesla, Apple, or Google selling themselves to somebody like Ford Motors or General Motors? No! Good companies, stay alive and keep themselves to themselves.
Sandisk obviously is not doing as well as it should, and it knows that. Together, with WD, they figure they can survive a bit longer. But under what REASONS would Sandisk want to sell itself to WD? If Sandisk's future is superb, then there is no reason to sell itself. I don't see Samsung selling their SSD org to anyone.
Make no mistake. WD is not about investing in their own employees. It's about hoarding cash and acquiring the next best company, and it doesn't care whether they are flops or not, because history has demonstrated, they are almost all flops as I've shown.