I think the statement was made in the context of Intel moving to multiple cores and abandoning the higher-and-higher clock speed approach, which is something ARM licensees can do as well. "Moving up" wasn't meant to read "getting as big as Intel." In that sense there really isn't "ARM" - there's a bunch of ARM licensee's with different strategies so it's not one company against another, it's Intel vs. a different architectural approach.
It's not that Intel doesn't have everything it needs and more in terms of technology and resources, it's just that Intel stands for a certain type of processor and ARM for a very different one. Intel could start making ARM chips again (remember XScale) but that would cannibalize their monopoly on PC and server processors.
Personally, I wouldn't count Intel out quite yet. There's a lot more to building a powerful processor than a core and all those years of building chipsets counts for something.
So apparently the author has no idea what they are talking about.
If AMD can't match Intel "moving up" then what exactly indicated ARM will magically be able to do it?
Even if everything else was equal, Intel has a huge advantage in fabs, which is very important with high end parts. Only IBM come close to them.