@AlwaysThere, I am talking about a duets album, not about a stand-alone duet song.Lmfao, what?
Sony and the estate secured posthumous duets/features by Akon, 50 Cent, Lenny Kravitz, Justin Timberlake, Justin Bieber (presumably), D’Angelo, and Mary J. Blige with apparent ease. Royalty divisions also extend to production and songwriting credits, and they had no issue retaining Teddy Riley, Neff-U, Ryuichi Sakamoto, Mark Ronson, Tricky Stewart, Burt Bacharach, Timbaland, StarGate, Rodney Jerkins, Paul Anka, Babyface, or any of the other contributors to MICHAEL and XSCAPE. Royalties isn’t an issue.
Also, when you say “sells harder,” do you mean “won’t be as successful”? If so, that’s ignoring the fact that the Timberlake version of “Love Never Felt So Good” accounted for around 80% of single sales and propelled MJ back into the Top 10, which the Drake “duet” of “Don’t Matter to Me” replicated a few years later. Setting aside the authenticity issue, placing a current artist with MJ is a guaranteed moneymaker.
We don’t know why the long-discussed duets album hasn’t happened yet. In all likelihood they just haven’t actively tried to put one together.
It is extremely difficult for a duets album to have big commercial and chart success.
Part of the reason for that is also that a duets album lacks chemistry and therefore it tends to sound like a mess.