Which clearly indicates to me that the fault lies with consumers at-large. We, the proverbial and collective we, are far too forgiving of the mistakes committed in the provision of services on which we rely. Relatively few people will be spurred to action over this and will dismiss it out of convenience to themselves.

Also not to be overlooked, Yahoo knows that the pain involved in migrating one's email address is enough to retain all but the most idealistic of customers.