Starcraft?

I looked at the video for Warhammer 40k for the PSP, thought for a brief moment that maybe they'd done a Starcraft-ish version, but quickly and sadly learned otherwise. This, though, led to a few minutes of wistful thought of those wonderful days wasted wasting zergies all afternoon.....good times. And judging from the sales, I know I'm not alone in wishing for a portable version.

So why haven't Blizzard attempted to cash in further on their PC juggernaut of the 90s with console/handheld versions of their spectacularly fun RTS?

Can't be system limitations; the gameboy even had a knockoff version of it that wasn't too terrible (Mech Platoon...very difficult to find, but my generous wife found one or me on Ebay; what a sweetie).

So I ask again: why haven't any developers approached Blizzard with the idea for say a PSP version of Starcraft? Nearly anyone I can think of would certainly pick up a copy, provided it ends up being true to the original.

Millions to be made here, boys.

Millions.