Easy.
When you own your music, you get to control who gets to sample it. Maybe you don't want a bunch of trash rappers threatening opps over a sample of your work
I have the Lord You Know CDQ.
DukeDaGod put out 2 compilations of all the stuff that couldn't get cleared in their original versions. Outside of an occasional loud ass GOD! GOD! sound, the records are intact. I know this because for the longest time on AHH, we wanted a CDQ version of Oh What A Night so when it finally dropped in 2011, it was like closure to a long journey.