Why is there no J2ME stack for PocketPC?

Every few months I Google for a J2ME stack for Pocket PC. Palm has one, why has no other vendor (Sun included) committed to the bigger handheld market? Apparently they had an early version of the stack for WinCE, but later support was dropped. Maybe licensing issues?

I know that phones are definitely the ultimate mass market, but PDAs offer such a rich GUI, it screams to be taken advantage of. I know there’s always Superwaba, which I may yet have a play with since it seems to really be coming along. The early versions I played with had a horrible GUI, and couldn’t use integrated handwriting/keyboard inputs, but I’ve heard things are pumping in that community, so I’m still tempted.

IBM have some kind of Websphere product for Pocket PC too, so I might suss that out as well. I know there’s a commercial offering out there too, but why develop an app that you can’t share with anyone unless they purchase their own Runtime? Superwaba is looking inviting.