Brewing is a labor of love. If you don't enjoy the process, then that's fine, but homebrewing might not be for you. I'll admit that the sanitizing process can get a little grueling (especially the bottles), but personally, I don't want to "Set it and forget it." I love the mixing, controlling the temp, stirring in the malts, tasting the wart, changing my mind and adding **** to the secondary...it's a beautiful thing.
Is it a cool idea? Very much so. Will it take off? I can't see it. My only real gripe with it is that it appears as though you can only do a couple gallons at a time. What if I want 10 gallons of beer? Do I run 2, 5 gallon batches? I guess there are some brewers who will only ever brew 5 gallon batches, but that's not me.
And what about the price? Lets say, hypothetically, that one of these machines costs $10,000. Think of all the equipment/grains you could buy with that money? I could buy 4, 15 gallon fermenters, and still have thousands left for supplies. Even if it only cost $1000, I think I'd still rather invest in one, used 15 gallon fermenter.