I have a $20 gift certificate to Starbucks from my Birthday, so they have three times more custody over my 'wealth' than Wallet of Satoshi does, but I get it.
But maybe its like playing whack-a-mole. If WoS were to get shut down, there are plenty of jurisdictions that wouldn't shut something like it down.
Good to think adversarially though. This place is magical and I'd hate it to lose it's spark (or zap.)