Interesting to note - those of us who used Iron Mountain/Data Safe for years - 4 Hours was considered a "Premier Rapid Recovery" service that we paid a lot of money for (as recently as 2003, actually).

In a true disaster recovery (Building burned down or is otherwise unavailable) - it usually takes most businesses a week or so just to find new office facilities.

But - agreed, there will be some customers for whom Glacier wouldn't work well for all use cases.

Now - a blended S3/Glacier offering might be very attractive.