Too Long; Didn't Read
Understanding that the crises we are facing stem from largely built-in features of the socioeconomic structure we live in, we can begin to consider solutions. As implied, these will require some sort of larger scale coordination, and at least an acknowledgement that inequality is a problem, and that there are common resources (like air and water) that should be managed for the common good, as opposed to for profit. Any reasonable solution to these problems should seek to maintain the benefits of the current system (individual freedom and innovation) while addressing the systemic problems it creates.
A classic solution to these issues is the progressive income tax, but newer solutions might include platform cooperativism, democratic corporate structures (one person, one vote instead of one share, one vote), and democratically-managed investment funds and financial institutions.