Why? Sane networks shouldn't block anything. Even super dangerous stuff like ports 135-139 and 445 are a morally gray area.
> The idea of uninspectable client traffic is somewhat unhinged, and is already heavily used by malicious actors.
How is privacy unhinged? Isn't that basically the same as the argument that we need to gut the Fourth Amendment because of terrorists and pedophiles?
Huh? What? Ever had to administer a corporate network for non-tech staff? Malware is everywhere. People are stupid. AND my assumption on a corporate network has always been that you have no expectation of privacy - its a work network, don't use it for personal stuff! Pretty simple.
That certainly isn’t true in the EU. You cannot spy on employees computers without a cause.
No. ISPs provide internet service to customers who pay them for it. The entire situation is different. The ISPs are under no obligation to break and inspect encrypted traffic. Owners and operators of home and corporate networks have an entirely different(and justifiable) set of concerns.