The downside of yield management is that it upsets the buyers. A couple times a week I go to my favorite lunch spot, and I know exactly what I'm going to order

The downside of yield management is that it upsets the buyers. A couple times a week I go to my favorite lunch spot, and I know exactly what I'm going to order and how much it will cost. If one day I walk in at it costs $20 to buy a burrito, I'd find somewhere else to go and I wouldn't go back. Also note that a lot of sites would rather run house ads instead of squeezing every last drop of $$ out of an ad space, for aesthetic reasons.