Who said "The music business is a cruel and shallow money trench"?

This quote is attributed to Led Zeppelin.

The music business is a cruel and shallow money trench - Led Zeppelin

"The music business is a cruel and shallow money trench"

Led Zeppelin Money

Rock Band British 1968–1980

"I've been dazed and confused for so long it's not true"

"The song remains the same"

"Whole lotta love is what I need"

"Black dog on my trail"

"Money is important, but it's not everything"

"Money doesn't buy happiness, but it buys things that make you forget you're unhappy."

"Money isn't everything."

"Money is meaningless without purpose."