Quick reply...

Isn't WebOS open-source?
https://en.wikipedia.org/wiki/WebOS
Code specific to the existing devices was released as webOS Community Edition (CE), with support for the existing HP hardware. Open webOS includes open source libraries designed to target a wider range of hardware.
LG Electronics is allowed unlimited access to the documentation, source code, developers and all related websites.
HP will still hold on to patents underlying WebOS as well as cloud-based services such as the App Catalog.

Palm Pre 2 was not that bad...

Best wishes.