I run the IP maintenance organization at Exodus, and I would easily stack our allocation policy up against anybody's. You have no idea what you are talking about in regard to larger companies.
Exodus consumes a very modest amount of address space given our size and presence on the Internet.
There are much smaller competitors of ours that consume larger amounts of IP space. We currently require extensive supporting documentation for IP requests from all our Customers. A Customer has to show a documented need for their usage request and we file all these requests and refer to past requests and detail as additional requests for address space occur. This method gives us a very clear and honest indication of IP address usage growth. This allows us to support our Customers' IP addressing needs in a very accurate and efficient way.