Has anyone seriously though about continuing where Palm left off with WebOS? It seems that at this point, WebOS would run just as well on the hardware that Mozilla is targeting with FirefoxOS, since the last WebOS phones came out what... 3 years ago?

From what I heard WebOS was awesome. It's surprising that nobody has picked up where Palm left off.

Not anymore. The percentage of Android that is open source at the consumer level of a phone is shrinking with each release. The Google services bits are a larger and larger percentage of the phone. With every release, something new falls by the wayside (search, SMS, gallery, launcher, etc). Many of the most popular Android apps will not run on AOSP (the actual Android open source operating system) because they are dependent on Google services which are not part of Android (location services, in-app purchasing, etc).

There are now 2 Androids. There is the Android base operating system which is open source. And there is the full Android install with Google that you get on a phone or tablet that actually runs all your apps.

Easily may be a matter of perspective here. But thanks for pointing that out!