Golly, nobody thought to post the silly thing being discussed!
"While corporations dominate society and write the laws, each advance in technology is an opening for them to further restrict its users."
Clearly he is a pessimist and has a rather narrow viewpoint.
He uses "each" to mean "every" which is automatically wrong (in the "never say never" sense).
Further, he assumes a premise that has a lot of truth but is completely debatable, definitely not black and white, and certainly not cut and dried.
As a counter to his excessive pessimism, for example, the internet has provided an opening to groups like his GNU to get their stuff distributed much more widely than if they only had people carrying tapes from place to place. GNU and other open source software is developed much more widely and collaboratively than just by a cabal in a basement in Cambridge, Massachusetts.
Has the "Arab Spring" been enabled by advances in technology to enable peoples to throw off restrictive dictatorships? Yes.
Numerous advances in technology are very disruptive to the corporations. To use an example from Stallman's own industry, IBM used to be the epitome of "the corporate man" corporation. Does IBM dominate society nearly as much as they used to? Nope.