Don't know what it says, but I know people who've signed contracts expecting the usual behaviour. I know a contract that promised action based on change requests within x business days, oops, the new customer sent 2000 change requests in a few months, more than the total of all older customers had sent in in years. Surprise!

You may have heard the story about the Colo/ISP that signed up a large new customer (you know the name) with 95th percentile pricing for IP traffic and unlimited power to the cage? The ISP signed a contract that said 95th percentile pricing and expected the usual usage curve, the customer made sure the curve was a very different one. And used (much)_more power in the cage than the ISP had ever seen, too.

> expecting the usual behaviour

Common advice is "put the expectations in the contract". For a significant sized ISP, this shouldn't have been the first dance they were invited to.

For example, when I bought an Adjustable Rate Mortgage, I made sure the contract stipulated when the rates would be adjusted, and what formula would be used to adjust them. Not "whenever the bank wanted to change them, and to whatever rate they wanted to."

Common advice is, yes... but I know specific examples of a very large ISP that missed something like that, and a middling-sized company, and my ex charlady. Errare humanum est, I suppose.