That's what Mark Rosewater, Head Designer for Magic: the Gathering, said in his blog
Image Credits: Wizards of the Coast
Cards Realm
The Reserved List is an official list of cards which will never be reprinted in Magic. Many players oppose the list, as it causes old cards to be extremely expensive, even though many of them are essential game pieces
Cards Realm
Vintage and Legacy are the most affected formats, including very expensive and hard to obtain cards