I wouldn't say its failed around here. One of the largest Ford dealerships in our area is a no-haggle dealership. Another large retailer that offers multiple product lines and is a huge volume dealer of two of them is also essentially no haggle as well.
If you know what you are doing and what you are trying to buy, you can decide if its a good deal or not. My truck turned out to be a great deal - and no haggling was required.