I apologise for misquoting you, but Im not sure that really alters the core of the argument.
You seem to have missed some of what I have said, and appear to be arguing the case for the current state of play, not the trajectory of the industry, which is the topic of the thread
I think perhaps you are not following developments in ARM and other portable hardware? (your comment about "smaller devices cost more money") doesnt seem to consider, in terms of current availability and trends, what we will be seeing in the next 12-24 months.
Anyone can go out right now and buy a quad core tablet with 2gb ram for just over $200.
Take Moore's Law, that hardware spec, and that price, and think about it.
Not capable of doing 'serious work'? (your own definition: multiple apps and browser tabs). Sorry. But they are. Right now. Plug the HDMI into a 24" and grab bluetooth keyboard & mouse.
How much "power" do you reckon the average end-user needs to do email, web, casual gaming, and the occasional bit of word processing? Sorry, but most end users couldnt give a toss if its a celeron or a core i7 - or ARM, for that matter - as long as it gets the job done.
If its cheap, and it works, thats where the market will go. People will follow the smart buying decisions, (is it fit for purpose?, is it cost effective?).
If you are getting bucket loads of work from gamers, then good luck to you. If you see them sustaining your business in a couple of years time because "games require windows libraries" then I really hope they do.
By the way, you might be interested to see some video of gaming on a cheap (sub-$200) tablets.
Mali400
Again, not today, maybe, but these are very powerful devices for very few dollars, and are starting to offer gaming experiences that will, inevitably, compete with "pc's". They also offer the significant advantages of being able to play on couch, bed or at a desk, and to be able to take your games with you wherever you go. Oh, and if you drop it, and it breaks, you can just go out and buy a new one, which, if 12 months have elapsed since you bought it, will be even quicker and better spec'd.
Jim