I don't even see why it's controversial to hold this opinion. Reading some comments, people seems to feel offended we could think that from the USA.
If anything, the USA are, with Russia and China, among the countries anybody in Europe like me would suspect the most about pulling things like this. The CIA and NSA have a terrible reputation, and the track record to support it.
We are talking about a country that went to war while lying about WMD against the UN vote, made money with south american cocaine while organizing coup after coup, elected Bush and Trump yet punished Chelsea Manning. A country that is still under the temporary 9/11 Patriot act, it used to mass spy on its entire population.
Of course I'm assuming the worse from them.
And yes, it's fair.
Actually, even if I were proven to be completely wrong in 10 years, it still would have been fair.
But I'm not even assuming that only from the US, but basically from any gov, including mine. Because history taught us that's what power does.
It's sane to be suspicious of people in power. Necessary for democracy, even.
Not the point.
The point of my comment is: I assume any gov to have such backdoor if they can.
That's a hand-wavy redirection that isn't relevant to the issue at hand, which is that:
There is no evidence of the US (and, in fact, many other large countries, with exceptions for e.g. Israel) installing backdoors and breaking into computers in order to steal intellectual property.
There is ample evidence of China doing exactly that, against a variety of targets (not just the US - they've taken things from Japan and the EU, among many others).
I wouldn't be surprised if every nation with a functioning Internet connection tries to put the hac on whatever they can.
But that's not the topic under discussions - the topic is stealing and commercializing IP, for which there is tons of evidence for China doing, and accusations of e.g. the Five-Eyes doing it are rampant speculation with absolutely no evidence included.
Yes, that includes your comment.
Which it is.