Re: content still needs to be CREATED
"People used to say that kind of thing about UNIX workstations once upon a time too - "I need a proper workstation and a proper workstation application" (games are a different arena). Fine, if that's what people need, someone is going to have to pick up the bill for their hardware design and build costs, and maybe software development costs, and if it's no longer cross-subsidised from the volume market, the PHBs won't like the bill."
Thing is, the costs are pretty much already sunk with the incumbent x86 (solutions already exist), so ARM is already handicapped. And once you factor in power-chomping things like memory bandwidth which you need to feed true high-performance applications, ARM really loses its efficiency edge versus x86, leaving x86 with its incumbency advantage. In short, in order to unseat x86, ARM has to leapfrog x86 in just about all its remaining application, including things like video encoding (which is too generalized for GPU work while still memory- and FPU-intensive). They're not up there yet and will probably need a few technological leaps to catch up, and meanwhile x86 isn't sitting idle, either.