Think about it.
We all use the same refer, heater, couches, chairs, sinks, wheels, axles, tires, water, sewer and gray tanks, AC, power cords, steps, doors, lights, carpet, pin boxes, tail lignts, marker lights, paint, graphics, beds, sinks, faucets, toilets, stove, shower and so on.
What is left.. arranging them in a fashion that people can use.
Only a few ways to arrange a living room, bed room, kitchen, toilet room, shower.
Maybe if FR would make a trailer that had no doors they would have the only trailer that no one would want to worry about copying...
BC