Kendrick blows this argument up tho. Ironically Dre wasn't sold on Kendrick out the gate. He liked the music Kendrick was doing before he signed...but once they started recording he wasn't blown away by the records and didn't know whether Kdot was going to win. I left Interscopre right before GKMC came out. People forget that they were trying to force hits on him, Lupe style. Passing him tracks. Gaga was gonna be on BDKMV, Rocky's single (fukking Problems) was made for Kendrick, etc. But as with Cole, he ended up knocking it out the park sales wise because he had a fanbase. And the rest is history.
Bishop Lamont didn't blow because he was an a$$hole and wasn't working up to Dre's standards. Dre is the type of dude who thinks working in a studio 5-10 hours a day on music that will never come out is "working hard." He wants dudes to write hooks, 16s, etc etc all day for him...and then work on their own music. Bishop was tired of that shyt, understandably, but he also wasn't putting in the work on his own project. And then of course when you violate other expectations/rules/laws without the clout of success to save your ass...you get kicked out.