So of we just keep people poor... issue solved. Like someone in Africa or North Korea, they are not going to need more resources than what can be regenerated. Simply because they lack the means to do so.
You're missing the mark, here. I am specifically referring to things like fast-fashion, trinkets, new phones every year, and other goods pushed on consumers not for their convenience, but to satisfy Capitalists.
If we assume a communism with the same level of technology, comfort, ... how would we avoid the exact same issue? Why would people suddenly not drive their own car mostly alone? Heat their homes in winter, causing a big portion of global CO2 emissions by doing so?
Socialism and Communism would be more focused on public transit and urbanized environments.