If I was developing for the tablets, I'd be enticed to jump the fence to apple land because I could reach a larger user base and get paid. Some of the restrictions used by apple actually improve the end user's experience....the fact that there's quality control means that only good apps make it on the phone.
How many times have you installed an app on your tablet to have it enter an infinite reboot loop? There is something to be said about having things just work...