Weren't there also thousands of tariffs removed? The economic advantages of that might outweigh any loses from tighter copyright, and I suspect was the carrot the US used to get all the copyright concessions. Everyone wants to export to the US but the US is traditionally too protectionist. Looking on the bright side of copyright. You never have to use somebody else's copyright work. You can always just make your own…
In one example, tariff reduction on some types of auto parts will move North American manufacturing jobs to Chinese factories who will be allowed to supply TPP member Japan, for export to North America.
> You never have to use somebody else's copyright work.
Some works are culturally significant, e.g. documentaries and historical fiction.