People simply do not seem to care about lockdown, general computing or indeed almost anything that much of the /. community holds dear; most just want to watch youtube and twittle their facebook and think nothing of their device requiring an account to function that will happily upload your favourite websites to your advertising overlo... I mean, The Cloud.
The traditional PC industry isn't going to die, but it will become increasingly marginalised, especially if like me you don't like "commoditised" machines that have been intentionally gimped.
Most people don't care because they just want something that works. They want a tool, an appliance. They don't want to mess with it "for the sake of messing with it" - just something they can start up, do their work, and shut down. They don't want to worry about viruses malware, or clicking the wrong link.
It's a side effect of the "commonization" (not commoditization) of computing. A computer is everywhere - and modern life is impossible without interacting with some computing device or other.
It's like cars - for the most part, most drivers don't care what goes on under the hood - they only care about the end results - good gas mileage, "sporty" and "powerful" (really, it means "I can merge on the highway and overtake without flooring it"), image (i.e., how it makes them feel), and reliability. It doesn't matter about hybrids or electric cars (they're really part of "good gas mileage" and "image"). Or if there's hamsters running in wheels under the hood.
Or if most of the stuff is buried deep within a piece of silicon in some black box under the hood. All they know is they need to follow the service schedule in the manual and the maintenance is generally taken care of (oil, fluids, etc).
They're not people who will spend hours under the hood tinkering (there are a few of them, but the vast majority of people don't care to do that) and so forth. If it fails to start, they call a tow truck.
Computers are just the same - the vast majority see them as tools to help them get things done. They don't care if the OS is free, open, locked down, or whatever, as long as it gets them where they need to go, that's sufficient. If it fails to boot, they take it to Geek Squad or to your local /. crowd.
That's why tablets are popular - they pretty much just work, are convenient to use (even laptops generally demand being put on a table rather than being easily handled and used while lying on the couch), and you don't have to wait too long for reboots and such.
Ditto consoles - pop the disc in, play game.
The PC market won't disappear, ever - just like we have pickup trucks, big rigs, and other vehicles, we'll need a full spectrum of devices from smartphones to tablets, laptops and desktops and servers. Of course, it also means prices will probably go up due to lower volumes, but is that such a bad thing? The race to the bottom has killed innovation in the PC industry as no one makes any money - think the vast sea of 1366x768 displays, 1080p displays, integrated graphics, and other common complaints of bargain basement PCs. And yet, if you have more expensive PCs, you see more innovation like SSDs, high res screens, different formfactors, etc (see Apple, and ultrabooks and other stuff). (Plus, not that you couldn't get high res displays before - you just paid more. The race to the bottom went beyond and cause everyone to cut corners and value).