Truth be known - even Ferrari is in business for profit, so all they really want to do is sell more cars.
If they didn't do that, they would be out of business and gone.
So while it is a noble idea to "sell the car only to those who really, really appreciate it" - it is no more enforcable than trying to stop someone ripping an MP3 from the CD they just bought.
Transfer of ownership is just that.
The only way limits get placed on something is if the "agreement" can be upheld and IF enforcing the agreement would be good for future business.
So - with F50 owners that leased the vehicle for 2 years - yes there was a restriction on selling the car for the first 2 years - which is why so many F50's went up for sale in the 25th month - the original lease was up, and ownership was transferred and many owners decided it was time to move on to the next exotic
At least this is the story told to me by an F40/F50 (and now F60) owning aquaintance back home.
But he could be making it all up as he never quite come clean as to what his "import/export company" imported and exported..