To be fair, it's not like Rakim chose to take a vacation all those years. I remember reading somewhere else that when he stopped working with Eric B., there was something in his contract that blocked him from doing any solo albums. It hurt because hip hop was still moving at a fast pace back then and it didn't start to slow down until the mid 90s.
LL, G. Rap, and KRS were able to find their lane in the new generation because they kept releasing new material and made sure their names stayed relevant. Rakim didn't get that opportunity. Had he dropped something in '93 or '94, it would have been a highly regarded classic.
You notice that once Rakim came back, he started doing more work. His potential album with Dr. Dre would have done for him what the 90s did for LL, G. Rap, and KRS. But it fell through because Rakim wasn't willing to sell out and compromise his artistic integrity for what Dre wanted him to do. Had things worked out, Rakim would have been down with Dre, Eminem, and 50. It would have went from the platinum trio to the platinum quartet, and Rakim would have continued being a big name in the 2000s.