[jeffbee]

That's a pretty insightful question. If people use the outbound addresses of these VPNs for disproportionately abusive activities then the reputation of those IPs and netblocks will eventually decline. It could come to pass that you wouldn't be able to establish a accounts from these IPs or, if you did, it would be in some kind of penalty box initially. That would go for all major providers, not just Google accounts.

[xnx]

That's part of the attraction to me. I'd love my VPN activity to blend in with all the other activity (crawlers, etc.) coming from Google.

[jeffbee]

I seriously doubt that you'll get that benefit from this service. When I use the Google VPN on my Android, my outbound IP is part of a completely separate AS they dedicate to this purpose, not on AS15169 like all Google's own outbound traffic.

[lima]

Which AS is it using instead, AS16591?

[jeffbee]

AS36492