Yes. McCartney was giving Jackson investment advice and told him one of the best is to buy the copyrights to pop music catalogs.
McCartney was plenty peeved when Jackson out-bid him for the publishing rights to the Beatles' catalog of songs. Their friendship never recovered.
In a settlement agreement with Sony in 2017, McCartney finally regained control over his and Lennon's catalog of songs.
Didn't he have to fight Yoko for it?