I don't understand this. A RV is both a vehicle and a house. The cheapest vehicle I can find new has a "laser cut" key (in actuality, it is a variant of the Bell center-cut keys that have been used in coin lockers since the 1970s, but it sounds impressive by the BMW sales guy with the German-accent.)
Why are RV locks so craptastic? Yes, someone can break a window or pry a door loose, but the locks should be on par with cars, which means at least getting STRATTEC (the same lock makers that make the auto locks for the Big Three) to make the locks. It might at most add $50 to the price of an RV, but what it would allow would be one key that works on all door, compartment, and (if a MH) ignition locks, and a mechanism that is sturdy, weather-resistant, and proven to work in all kinds of environments.
If not them, there are many other high security lock makers that offer millions to billions of different keys. Sussex Installations in the UK use a key (Mul-T-Lock) which guarantees that nobody's key will fit someone else's lock unless explicitly keyed that way.