This is a Catch-22 for Apple.
If they do not seek legal action now and then down the road try to go after someone doing what Palm has done the judge(s) might ask Apple why they did not seek legal action prior and their credibility could be shot.
If they do go after Palm and everyone else now then Apple could get the rep of being lawsuit happy and a menace.
I wouldn't mind seeing everyone that makes a device that uses Apple's patents pay a royalty.
Why is the Palm Pre Making Apple Tremble?