Re: What's the advantage for the Chromebook user?
I cannot entirely agree with that, most folks I know spend about 70-80% of their time on their desktop/laptop. The remainder of the time (usually before going to sleep or when they are running errends) on their smartphone/tablet. I really only go to my desktop to play high grade games (it's an awsome machine), but the majority of my time is on my chromebook doing homework or strolling the web and listening to music. Less than 5% on my tablet, and an inconsiquential amount of time on my phone unless it's in a call for work.
Having Android apps on my chromebook would be convenient though I have no doubt power users like myself will start moving away from tablets. I still like having mine around, and will long after almost any app is available. They are very useful for reading, and testing apps I work on.
While I agree with you on many younger folks, most of us with some amount of decades under our belts will still likely prefer to have the real deal, and we are the majority of buyers since we are the ones with the money.
But I am excited to have many of my API's I use on android (not to mention ones inspired by actually having a keyboard) for use on my chromebook without having to stream my tablet screen.