I made three very clear arguments as to why capitalism artificially increases scarcity. Through the loans-at-interest money system, through the shareholder-driven corporate system, and through the constant propping of artificial demand, scarcity of numerous resources is driven far beyond anything necessary for human well-being. You still haven't addressed those issues
at all.
Instead of addressing those issues, you pose vague hypothetical questions which can be used to attack literally every system of government ever conceived. There's nothing at all in your questions that are specific to the system I told you about or even specific to questions of environmental scarcity - they're the same questions that EVERY government is forced to answer. If you want to read more about how they potentially could be answered in this framework, read
Sacred Economics as just a bare beginning primer -
the entire book is available online.
The greatest difference is that the model I told you about provides a framework in which fixing our environmental problems is incentivized, whereas in modern capitalism the continued destruction of the environment is incentivized.