The reason the exchange companies implemented the 'no rental of exchanges' is actually to protect their members. In the old days people would snap up the best/most popular exchanges and then turn around and rent them out making a huge profit. The exchange companies had to put a stop to this. In the old days you would see 'exchanges for rent' all the time on Ebay.
There were also those that would sell spacebanked weeks on Ebay. The exchange companies put a stop to that also.
It's the bad apples in the barrel that caused these rules to be implemented by the exchange companies.
R P.