The effects that you mention seem to be the purpose of these attacks. Like the Great Firewall, the Great Cannon serves to keep the Chinese Internet and therefor

The effects that you mention seem to be the purpose of these attacks. Like the Great Firewall, the Great Cannon serves to keep the Chinese Internet and therefore population isolated from the outside world. Their Politburo is a lot less concerned with losing market share abroad than with losing mindshare domestically.