My guy, that's a perfect example of Jay-Z wave riding. Timberlake wasn’t a huge huge pop/R&B superstar until AFTER FutureSex/Love Sounds dropped. So it's no surprise Jay was hesitant to hop on a track before that. Once he saw that wave take off with the TI/JT joint and others, Jay all of the sudden became mister pop collab and of course, once JT was firmly established as prob the biggest male pop star, he has him on his lead single, then jumps on Timberlake’s big comeback lead single as well. That’s textbook being a dikkriding fakkit who loves the attention
Now after he dropped that Kingdom Come trash, and then American Gangster (which was dope, but not big commercially) - he went back to Ye and hopped on the pop wave for BP3 and then rode Ye’s wave on Watch The Throne. Those 2, especially WTT, absolutely helped revive his status and relevancy. Not even worth debating that. He was heading toward flat top status before Ye brought him back.
I don’t 100% agree that he rode Beyonce wave in 2003… but you lying if you tryna act like she wasn’t always destined to be the biggest star from Destiny Child. I don’t care if her song on that Austin Powers joint flopped. Kelly Rowland, who you brought up, is proof that having a hot first single doesn’t = career stardom. Bey was always gonna be the star from DC. Bonnie & Clyde helped her but it helped Jay just as much.. the Ether was still burning and he was coming off the Best of Both Worlds flop. He needed a song like that just as bad as she did.