Well, I have spent a lot of time trying to figure out how to make a more equitable society possible and it gets really hard. You can get derailed down the "magic money tree" path. There's the old, "if you raise taxes the "achievers will flee" argument. There is a basic question about whether there is actually enough "stuff" to go around. One of the strongest features of Capitalism is that you don't really have to think too hard.
I think I have found a way to make it work though. Like solving a maze, it is much easier if you start at the end. And we are aided in that a lot of our parameters are set for us.
We know, for instance, that a Sapien requires x amount of calories to survive. We know that without warm clothing and shelter, we will die in the winter. Potable water is a must. It is blindingly simple, then, that if we value human life these things should be made available.
It seems to me this is self-evident - only to be countered by the argument that perhaps some people are not deserving of life. I think that one would have to become "God" to go down that path.
But I truly believe that we have the ability and resources to meet those very basic needs - food, water, shelter, clothing.
And if we move on to other needs, like the need for safety, again I see no logistical reason why we can't make it work. Sustainable transport, properly managed, is not out of our reach at all. Closing the pay gap can be done.
We can continue the list - I feel that mental stimulation is a human requirement, as is recreation and fitness. Medical care. Education. But all of these things can be done. We are doing them already in a half-assed way.
Leaving this planet and colonising space.....there are some very real challenges. Some we will struggle to do.
But these other things can be achieved, and I feel that if we have the ability to make these basics available to all, then we must.
Pay equality can be achieved, if we make it a goal. The logistics are not hard at all.