So, that leaves something like 1-Click subject to patent claims as a "business method", but according to the above ruling, there is an argument that it lacks sufficient substance as a method to be patentable.
Thus, someone needs to attack "business method" patents and obtain a similar ruling.
Well, that's the question, isn't it? I don't think this completely invalidates "business method" patents.
This is an extension of the argument that "$process on a computer" is not patentable separately from $process. A previous ruling said that if $process was already patented, "$process on a computer" did not constitute a new patent. This ruling says that if $process is not defined specifically enough to be patented, then "$process on a computer" does not add enough specifics to make the whole process patentable.
So, I think that leaves something like 1-Click subject to patent claims as a "business method", because it is sufficiently specific: The business identifies you, stores your payment info and address, and both charges you and ships stuff to you with one action. To invalidate it would require a similar process in use before the patent, whether or not it used a computer.