Speaking entirely divorced from my opinion on China politically (as someone with strong US and TW ties, FWIW), I think the Great Firewall has been a brilliant economic move in retrospect. While it may have been an accidental side-effect, blocking so many foreign sites has enabled a flourishing of domestic internet companies of the likes that nobody but the US has seen unless I'm mistaken.
And for a "middle class" of blocked sites, while not technically blocked, the packet delay is so great most people (except a dedicated few) will just shrug and figure that cross-continent internet connections must be too slow to be practical. Accessible, but only if you're willing to wait a minute. A brilliant political play, because it's hard to pin a charge oppression on anyone, since the information is technically there, but so slow nobody will access it.
And for a "middle class" of blocked sites, while not technically blocked, the packet delay is so great most people (except a dedicated few) will just shrug and figure that cross-continent internet connections must be too slow to be practical. Accessible, but only if you're willing to wait a minute. A brilliant political play, because it's hard to pin a charge oppression on anyone, since the information is technically there, but so slow nobody will access it.