That's the point: what people use is normal equilibrium or close-to-equilibrium thermodynamics. Even in situations that seem far out of the scope of equilibrium thermodynamics and where one would normally expect Prigogine physics to be the perfect candidate - one example being CVD or VLS growth of various nanotubes/nanowires/etc. - I have never seen the latter applied. Everybody just goes with good old (near-)equilibrium chemical thermodynamics. Now this might be just a manifestation of Maslow's hammer, and Prigogine physics is hard, but for what it's worth, here's one example of a big hole that should be covered by the theory but is, in fact, not.