Yes, I think this attack has brought to everyone's attention that many companies have gone away from what used to be the extremely common practice of having you

Yes, I think this attack has brought to everyone's attention that many companies have gone away from what used to be the extremely common practice of having your authoritative DNS serving shared across multiple DNS hosting providers. This would have addressed the issue... and we're seeing that by the end of the day many of these sites have gone to having multiple providers.