Ignoring all the problems like: who gets to decide; how are the decisions made; how often is success measured; what corrective measures are allowed; what is the best way to help the poor; what is the best way to redistribute the wealth; how to prevent lobbies from destroying the plan; how to avoid money escaping the countries implementing this into tax heavens.
Ignoring all that (and many more questions of the sort) I'm left with only one question: how exactly is Musk helping "the poor"?