OK, having read the economic inequality, there is a little blurb at the bottom that discusses the opposition to these theories. I.e. difference in behavior.
Public Education - I made more of mine than most, unfortunately not so for my children. Behavior is a big equalizer.
Prgressive Taxation - Once you remove the tax burden from the lowest, they are in effect voting for benefits from the top. Its much easier to be on the bottom than the top, hence the incentives for a lazy person are to loaf. While there are people with legitimate concerns, there are way too many people I have met in life who are their own worst enemies, mostly through a failure of leveraging that wonderful public education system....
Minimum wage legislation is not a fix. Most heads of household are not in a situation where they have to rely on minimum wage to support a family. Increasing minimum wage just transfers more costs to the consumers arguably making it even harder for that person making minimum wage to get by. If minimum wage was all it took, why does unemployment go up when min wage goes up? Why can my 17 year old son not find a job when he is ready and willing to work? Think the two are related?
Nationalization does not decrease total costs except through extreme rationing. If you have to wait 6 months for routine care do you self medicate, wait, look for other options? I.e. is the reduced cost part of rationed services and frustations with an ineffcient system or legitimate reduced costs?
Unfortunately economic inequality theories cater to wealth envy and justify a Robin Hood type mentality while not adjusting behavior or offering incentives to encourage more efficient or beneficial behaviors. The dig in the article about the far right discounting these theories does not also mention that all too often the far right consists of people absolutely willing to help someone else out.... but only if they are willing to work as hard at getting out of their mess as they expect others to work for them.
Take into account our latin american workers who leave family behind, live 6 to a room, and send money home to better their lives. While I am against illegal immigration, I much more respect this attitude than clinging to inner cities and gang/thug culture often supported by an emotional argument that keeping these families together is more important than kicking the young men and women in the rump and making them go where the work is....
As you can see, the intentions are nice, but entropy and laziness are always going to be the bane of good intentions.