This is about freedom and the right to self-determination of governments/citizens (and thus also about democracy).

I would like to point out that our patent system is basically something like this: We as a society will protect your intellectual property rights for your machine only if you show us your blueprints.

Sure but, right or wrong, the general consensus of developed countries is that software is protected even if it is closed source. (That is, they have decided that patent protection requires disclosure but copyright protection does not.) A few other countries may disagree, but the whole point of TPP is to harmonize disagreements because (it is claimed) the frictions they introduce are worse than the micro-optimizations that individual states make.

Incidentally, in practice these sorts of disclosure agreements are used by states like China for protectionist reasons, not as part of some open-source ideal.

You lose control over your own property. That's enough. Similar to police officers entering your home without a warrant.

And these non-capitalist countries are?

All countries are capitalist. They may claim otherwise, but if the party that paid for the means of production makes a claim on the value of the produced goods, then they are capitalist. It doesn't matter if the party that provided the capital was a private citizens or a government. If the workers that produced the goods don't have sole claim on the value of what they produced, the system is capitalist. The only difference in the USSR, Maoist China or even North Korea is that the state tried to monopolize capital.

I will just put one copy of windows in a powerplant. Somewhere.