The singer told NME that, with a few exceptions, he does not like to see old groups get back together to cash in on their past.
Brown said: "Maybe if you see me begging on the streets you might find me doing The Stone Roses the next day.
"We did it because we wanted to change the world, we didn't do it because we wanted to be millionaires."
He added: "I was glad when the Sex Pistols got back because they never really got paid."
The Stone Roses were tipped to reunite this year to mark the 20th anniversary of their debut album, but both Brown and guitarist John Squire have repeatedly denied the reports.
Bassist Gary 'Mani' Mounfield has nevertheless suggested that Squire and Brown might change their minds about a comeback if enough money was offered.