There have probably been things written about it in more technical detail, but the chinese firewall became an issue in world of warcraft, when players discovered the packet sniffing and used addons to take out chinese players and guilds by dropping malicious keywords into packets (wow addons also have the additional problem of having way too much machine access). Honestly, I take no political position here at all, because I think most countries are engaging in some sort of form of this behavior - but in the case of WoW, it basically forced chinese players who were becoming quite competitive out of the game entirely. I felt really bad for them. How do you even mitigate issues like that in a global internet? I have no clue. I’m sure scrapers of all sorts of countries are tripping up over all sorts of censorship stuff, which is why, I think a tightly protocoled isolated section of the web would likely be a good thing to have as a safety raft.