Cliff Richard is just a singer
He recorded Living doll, written by Lionel Bart in 1959.
And again 27 years later with the young ones in 1986.
He can record it again if he wants. In recording it again, he makes a new recording, with new marketing and new sales and new studio costs, and new engineers employed and new commerce and a new copyright limits. i.e. the world moves forward and the IP industry makes and sells stuff and the economy benefits.
A win win win situation.
Or he could whine and wish someone would buy his 1959 recording which benefits nobody. A lose lose lose situation.
Look at it this way, the builder who built the walls of the studio in 1959 only got paid once, he doesn't get a royalty from everyone who uses the studio for 50 years. That's a strong inducement to put up new better walls, Cliff and his family and his families family can't rest on his laurels forever.
Got my self a crying, whining, weeping, griping living dick.