While this is undoubtably an aggressive move by China I can't help but doubt that the impact will be very large. By now most Chinese users of googles services are using VPNs so this really only affects the lowest common denominator of Chinese users
Using VPNs are becoming increasingly difficult too. All the large VPN services are blocked here; OpenVPN doesn't work; the only option left is to use unknown services which are not guaranteed to be genuine.
StrongVPN works fine for me. I leave it on pretty much 24/7 except when it disconnects a few times a day.
I found ARK and a few others to work on my iPhone. None on my MacBook though.