Somewhere between communism and libertarianism there must be a healthy middle way, such that overall growth is promoted.

Inequality is a fact of reality, with disparities of intelligence, physical abilities, resources, and environment to be acknowledged and worked with, rather than ignored or artificially equalized.

Inequality can be a motivator for individual, and thus group, progress. But excessive inequality can be demotivating.

Sharing the wealth is effective only up to the point where it helps to give everybody the opportunity to be successful. I believe this includes basic healthcare, education, and safety.

Given more than that, people lose the motivation to be productive. Given less, people lose the ability to be productive.

Notes:

"Trickle down" theory