Then they can view the traffic even going to and from foreign sites who would not comply with an order to share private keys and no safe browsing blacklist (like that would be accessible from inside the regime anyway) will help you.
Addressed here: https://news.ycombinator.com/item?id=21721843
>Shit, they can require vendors include a hardware backdoor, especially since so much of that hardware is produced domestically.
If they're only doing it for local computers, the consequences/response is the same as the previous paragraph.
If they're doing it for foreign computers on a mass scale required for a DDoS attack, if discovered will torpedo their entire electronics sector. All the "ban huawei" politicians will have a field day with that.
If I'm understanding other comments correctly, browser vendors installing HTTPSEverywhere cuts down the potential for this Great Cannon attack from 7.7 billion users to 1.4 billion. An 80% reduction seems significant.