Conversation so far:
What was a business venture Kanye West started?
Kanye West founded the record label and production company GOOD Music in 2004, in conjunction with Sony BMG.
Was this GOOD Music record label successful?
GOOD Music has released ten albums certified gold or higher by the Recording Industry Association of America (RIAA).

Question: What was another business venture he started?
Self-contained rewrite: What was another business venture Kanye West started?