Closed system my arse
It's not really closed - why not? Because it's not a standalone device. You need a PC or a Mac to use it properly, to copy your photo's onto it, and your music, and your films etc etc etc. Now if this thing had a single USB port, and the ability to import the above from a memory stuck, USB CD drive, etc, then you might be onto something.
It's not the end of computing as we know it, It's an accessory device to your existing computing infrastructure, only one that doesn't need security software and the associated $ubscriptions, doesn't have a dozen ways to install and/or remove software, doesn't present you with a thousand tray icons bugging you individually about software updates, doesn't feel the need to tell you that version 12.34.5678 of your graphics drivers are now available, doesn't magically speed up when you remember to defrag it/run a registry cleaner or slow down as your startup items folder fills with trash, won't fill your screen with 25% of the screen real estate taken up with title bars/minimise buttons/unwanted toolbars and un-needed scroll paraphernalia, won't ever prompt you to perform upgrades and force a reboot after they are applied in the middle of using it for something else (Yes, I know that upgrades will be available, but the point is that you do the upgrade at the point of synchronising the device, ergo when you are not using it for other tasks), doesn't have a noisy fan that kicks in when you start a game, or visit a website with a flash advert, or a battery that will barely get you through an evening of youtube etc etc ad infinitum.
Some people, maybe people who don't lurk on tech websites, might appreciate some of this. Personally, I long for the day when the standalone iPad comes out, then I can make a 90% saving on my Family IT Bill in time spent faffing with shite that people who don't want to know, don't NEED to know...and at the end of the day, for those of us that want more power and freedom...guess what, we still have it!