Can't say he's wrong.
Ignoring the comparative quality of music from both sides...which is leagues apart. 3-6 didn't successfully create any "stars" outside of their original inner circle...nor a millionaire.
Dudes like T-Rock & Playa Fly were making more money when they left 3-6's multi-million dollar a year generating label... and went independent.
Muthafukkas gave Skinny Pimp a lump sum of $10,000 for a album that moved 60k units indepently.