I normally love Enterprise and got the normal great service from a very nice neighborhood location. But when I went to decline the insurance as I always do (since I'm already covered both by my own car insurance and by Visa) the agent informed me that in the event of any damage I would be assessed not just the repair bill but also Enterprise's "loss of revenue", which my insurance would not cover. So I wound up adding 50% to the cost of the rental - by then I had no alternative.
Loss of revenue assessments, while legal in some states, are dishonest and one-sided. They don't reimburse me for lost revenue if I have a flat tire and miss an important meeting. And their financial loss from an out-of-service car is not the "hypothetical revenue" but the "actual profit" - a much smaller number.
Needless to say I was very disappointed in this tactic from what had been my favorite car rental company.