Reading the coverage of the conference call, it does seem HP is doing this to keep WebOS alive and expand it out beyond the phones.
We intend to operate Palm as a business unit within HP, and Jon Rubinstein is excited to run it within HP.
Thats pretty big. That means Palm will be seen internally alongside the printer, storage, server, workstation and consumer PC groups.
They kept talking about tablets in the call, something tells me HP is somewhat frustrated working with Microsoft on the Slate. HP wants to compete with the iPad, but is restrained by what Microsoft does. Now they have their own OS to play with and expand, and build a device similar to the iPad in battery life. And they can try and make something unique, instead of just another Android or Chromium powered tablet.
On the server and storage side HP (and going back to Compaq) was really focused on not allowing one other company to impact the business. Supporting Netware was just as important as supporting Windows, and it's a core reason why half the worlds Netware installs ran on Prolaints in 2000. Same goes for Linux, they made a big investment in ensuring the servers ran Linux well. Microsoft could have sunk, and HP would have been ready to still sell servers and storage, whereas Dell back in the day would have been devastated.