LL, Jay Z, and Michael Jackson didn't necessarily "adapt" as to explain it, but they aligned themselves with whomever was hot at the moment to stay relevant. I guess you can that adapting, but each of the those 3 at some point in their career would link up with the hotttest artists every couple years to get their fan base. And I'm not knocking it, cuz it clearly worked in their favor, but some people just aren't willing to do that.
Jay Z came out fukin with primo, biggie, tried to get Nas on his first lp. A year later he's doing songs over 80s pop hits that was hitting at the time. A year later did a a song with DMX who was HOT in 1998. That same year he jumped in the "ha" remix. A year later did another song with juvenile and you pretty much get the picture. He aligned himself with the hottest acts and nothing is wrong with it.
LL's career came to a make or break album in 1990 and he hooked up with the hottest producer at the time (marley marl). 3 years later he was rhyming over hard beats that were meant for groups like Onyx or Lords of the underground and people trashed the album. 2 years later he links up with Boyz 2 men that ha just sold about 8 million records, Keith murray, fat joe, and prodigy were all rising stars and hot at the moment. 2 years later the same thing with 4,3,2,1, even adding Master P to the remix and so forth
Michael Jackson went from working with Quincy Jones for 3 albums, to Teddy Riley and the new jack swing sound in 1991(song with Heavy D, who was a top artist), next album had a song written by R kelly and song with Biggie and then went to Darkchild.
It's smart, but some people choose not to play the game for fame.