It depends if we're talking about corruption relating to IP laws or general corruption.
If it's the former, which I presume it is because that's what the topic is about then this simply isn't true. The only nations showing the level of corruption of the US are those who have moved their economies towards imaginary property. This includes the likes of Britain and France, but countries that have more of a manufacturing or natural resources focus so far seem to have little interest in pushing strict copyright laws (Russia, China), because it doesn't benefit them and only benefits their competition (again, the US, Britain, France etc.).
We're in this situation where in the West, economies are built around imaginary property because it means people can paid a lot for doing relatively little whilst the other countries do all the hard work for us. The problem is that the other countries want to be in this situation too, and as we've seen with outsourcing to Asia, they can do it cheaper. So we have this situation where competitors are beginning to eat away at our cushy jobs, and the Western governments are beginning to panic, the movie/music industry is the next big industry at risk and governments (arguably wrongly) assume this is for the same reason. Stricter patent laws, stronger anti-piracy laws and other similar laws are all being put in place to try and stop the fall of our easy lifestyle and the natural balancing out of jobs.
I don't see laws fixing it long term, I think it's inevitable that it'll happen regardless, I believe we'll see equalisation of jobs across the world regardless and this does mean a rise in manufacturing jobs. I think it's good for the world overall, but you try telling that to the government being nagged at by 1500 IT call centre workers that just got laid off because India can do their arguably quite simple jobs cheaper- governments will desperately try and protect against that even if it is inevitable.
It's likely over time we'll see a move towards more balanced economies all round which personally I can't wait for, frankly I think it'll cut all the chaff out of the IT and other industries which plague it and who really aren't competent enough to be working in it. They'll be pushed back to relatively dumb manufacturing jobs where they're better suited. We wont have credit crunches like now because we wont have entire countries dependent on fiddling financial figures as they'll have to have a manufacturing base too.
So then, ACTA is one of those things that's just there to try and prevent the inevitable, it's an attempt to stem the flow of balance across the world, it's not a sign of corruption per-se, but a sign of desperation more than anything, the rest of the world certainly isn't as corrupt as those pushing it though because the corruption of those pushing it stems from the self-interest and the harm it causes to the rest of the world and those who get in the way of said self interest.