Is there something actually proven and more comprehensive, than speculation from two decades ago? Nearly all of the concerns listed in your Echelon link, are political in nature (eg about Princess Diana, or the five eyes with Canada spying on two British ministers for Britain in 1983), not examples of industrial IP theft.
Baseless claims won't cut it. The US has had by far the world's largest economy for the last two decades. There should be dozens of legally proven - court cases - examples of intellectual property theft far worse and larger than anything China has done, given the scale difference of the economies over that time and the supposed capacity to hoover up global communications and put it to use in industrial espionage.
Saying that well: here's one example, or here's two examples across 30 years, is not good enough to indict the world's largest and most technologically advanced economy for being rampant industrial thieves. To show a comprehensive pattern of deep industrial espionage, and to show that it isn't more along the lines of routine espionage that occurs between any two great economic powers, requires a lot more proof.
There should be dozens of legally proven - court cases - examples of intellectual property theft far worse and larger than anything China has done, given the scale difference of the economies over that time and the supposed capacity to hoover up global communications and put it to use in industrial espionage.
How many legally proven court cases against industrial espionage carried by the Chinese State are there?
In an interview with Germany's ARD TV channel, the former NSA contractor said the agency would spy on big German companies that competed with US firms. [0]
President Barack Obama got a list of talking points that United Nations Secretary General Ban Ki-moon hoped to hit on during a one-on-one meeting, courtesy of the NSA's X-Keyscore program. - not economic but it's hard to imagine this tactic wouldn't apply to economy related meetings [1,2]
FWIW, GCHQ's powers are explicitly exercisable in the "interests of the economic well-being of the United Kingdom". Given the close cooperation between the UK and the US, I would not be surprised if the information is also forwarded to the US.
Foreign governments are not concerned with spying on you for the sake of tailoring ads to you. They are concerned with furthering state objectives, which may include proxying traffic through your computer for the purpose of concealing origin, infiltrating public and private infrastructure for the purpose of sabotage, exfiltrating corporate and state secrets, etc.
The US government has overthrown democratically elected governments in other countries to install a government more friendly to specific US corporations.
The US government has jailed the only known telecom CEO to resist warrant-less spying.
The US government has arguably had a major hand in building Stuxnet, which used two zero-day vulns in MS Windows and two stolen Windows driver signing certificates.
Unfortunately the CIA archives are not open to the public.
I don't even know what the big deal is. Countries don't get prosperous by singing kumbaya and group hug sessions. Mine certainly didn't. Whatever it takes as long as you get away with it.