Ja was on his way out when 50 jumped on the scene. Those were the days after 4 albums u done . 50 just made it so he could never come back
They weren't paying attention at the time. Ja Rule was embarrassing himself before most of us even heard of 50 Cent.
People don't remember when he was drunk/high on the radio beefing with DMX talking about "Ya'll wanna see Pac come back! Well he's right here!"