you get to pay over the odds for the tablet, then pay for a 3g contract with it, then pay for all your content because it can't run divx, only .mov or h264, you can only get ebooks on it via itunes etc
if they lock it down it's worthless in my opinion
they will lock it down because lets face it, it's not going to sell in massive numbers but those who do buy it will shell out a fortune to apple