Totally agree on the recent headway x86 processors have made but even more worrying is that they have very capable integrated graphics processors onboard as well. Couple this with MMX and hardware FPE etc and they are really starting make an attack on the domain of ARM. The other thing to worry about is that as development costs are driven down then being able to support applications on just one processor type for desktop, server, laptop, tablet, STB makes a compelling economic arguement.
As it stands the A9 is a great little machine but the article does highlight a general failing in the market for some applications. As always the call for faster machines is good but only if we have applications to take advantage of it and add to the breadth of what we can do on RISC OS machines.