There is a lot of reasons why this problem can't be solved for good. One is that there will always be needs from people. The population keeps growing and growing. The resources keeps on dwindling down. Not to mention corruption. Will there be a time where we would all have to literally fight for resources?
By saying this, you ignore the new world order based on globalization. Nations in different areas of the earth can't satisfy all its needs alone. Each country needs resources from other parts of the world which force them to cooperate all together to realize Sustainability. In the other hand, nations who has no problem producing unlimited supply in any product would't benefit from it without exporting it to other nations whom in turn will exchange with other resources. Yes the scarcity is a problem but not without a solution.