Man is that HP slate thing lagging !!!
It already looks old-fashioned compared to the iPad before it is released....
(by the way, that video was not Flash

)
It's a format war people. Remember VHS, Betamax, V2000 ?
Also: the iPad is not targeted on any of us nerds who actually know what is going behind the scenes. It's targeted at people who want a device that does, like a TV or a coffee-machine, what they want it to do and not want to be bothered about the technology behind it.
The protective attitude is not something new or unique for Apple. Shall I remember the Atari 2600 ? Why did the videogame scene crash in 1983/4 ? Because there was a ---steaming pile of meadow muffin--- load of rubbish released for that machine by companies who went for the quick buck.
Atari had no control over the contents on the machine. Worse: they started pumping out rubbish themselves.
Nintendo (just as an example) learned from that and changed the rules. I think, in the end it works for customers. And for the companies too, because Nintendo is still around and stronger than ever, while Atari is long dead.
O and you are still free to buy any product or not.