Why would people buy this more expensive device than the Viewsonic for example. Well, they won't will they. Samsung are going to sell a few, but unless the price comes down, not that many. They seem to be bandwagoning, and it will come back to punch them in the face.
As to the rest of your epistle, well, most Apple products are copies of other companies products, just implemented in a better way. Phones? Pretty sure they existed before the iPhone, Tablets? Pretty sure they existed before the iPad, MP3 players? Pretty sure they existed before the iPod. The only real product innovation from Apple was the original Apple home computer. (Oh, hang on, I forgot about the Commodore Pet.). They have innovated in marketing and product improvement thougyh.