Didn’t the NSA tap Google’s backbone? Everything was unencrypted all they needed were taps at willing backbone providers. [1] Who needs to beat the silicon when you can just tap the pipes. If Bill Barr’s recent encryption speech is ever realized silicon wont matter.
I bet that's exactly what most companies did. Most enterprise WANs are probably still not encrypted today and it would bankrupt their IT departments to do it.
[1]https://www.washingtonpost.com/business/technology/google-en...