If you had a nice field, you laid a track and half a dozen hardstandings, with electric points, WiFi, a fresh water point, waste disposal tank, recycling rubbish bins, someone to attend to the general grounds, maintenance, grass cuttting etc, and someone to administer the booking system, phone line etc, how much would would charge per night to make it worth all the bother, many times I see people attempting to heat their awning with a fan heater during the colder months.. , the electricity cost alone is so much higher now than last year.
I do agree that some sites charge way over the top, a bit like Vw and camper-van dealers..
#Disclaimer I work on a holiday site that has a small touring site attached.