This isn't true at all. If all of the global rich immediately became carbonless monks....we would cut only a portion of emissions. And continuing to emit increases global warming. Even if you estimate that the top 1% use 70% of our carbon (implausible) that still just pushes threshold back a few decades.
And if industry stopped producing with carbon billions would starve. Industry makes stuff for people. Energy is useful, we aren't just taking oil, coal and gas and burning it in factories for fun.