I raised my IBA prices recently and still wash cars when the weather is right.
I poll customers from time to time and the majority I speak to would not use friction.
I don't think blanket statements about industry segments are valid; it's about a specific marketplace. Some busy and prosperous carwashes would fail miserably in a different market.
I heard of one busy detail shop in the Boston area, for example, recently. The equipment was antiquated and the facility less-than pristine. However the place was SUPER BUSY and has been there for a very long time, so I assume it is a financial success. And here I am in a little W. MA town, with a beautiful shop, air tools, new extractor, squeaky clean restroom, everything put neatly away in locking, shiny cabinets, etc..
Maybe I am missing something!