Yes, I really like Rackspace. Great customer service! And the tier setup makes sense to me. It's Smith's Division of Labor principle at play. Sure, it's technically possible to adjust each feature separately, but you add so much complexity at every layer that it's a wash economically.
In the same vein, I can buy a Honda Civic for $10K, but a car with custom specs isn't $12K, it's $some_orders_of_magnitude_more, even if it's equivalent to a Civic in almost every way.
