In my opinion moves to global unification are unavoidable. Free trade also makes the world richer and better. Against the TPP there are justified complaints, that must be addressed (e.g. individual freedom), and others that are plain anti-capitalist propaganda.
Whenever 'freedom' is mentioned in such a context, it obviously means the lack of freedom as in the USA Freedom Act, Freedom Fries, etc. Free trade is therefore, anything but.
The article surely is full of anti-corporate paranoia, but their points about security research of safety-critical systems is certainly valid and destruction of private property used for reverse engineering doesn't exactly sound like free trade. If TPP contains this kind of stuff, one may wonder if it has anything to do with trade and unification at all, unless by unification you mean "monopolization by obfuscation".
Not just "Western nations", but western companies. And by western companies, I mean the Cayman-registered holding companies that record all the profit for multinationals.
One world, with freedom and abundance for all.