You're making quite a few assumptions. Consider the Indians, I think it is similar here in Canada as the States, the reservations, while having some sovereignty, are also sorta wards of the Federal government. Land is communally owned, many reservations are as you say, no land improvements, trailers or pre-fabbed houses, basically a slum. These are people who lost their lifestyle, often violently. Have been abused for generations, especially having their families ripped apart. Fact, people can't make good decisions if they don't know their choices.
Some of the natives have really lifted themselves up, even with the communal ownership thing. Take the Osoyoos band. To quote from their web site, http://oibdc.ca/
The Osoyoos Indian Band people honour the hard working, self-supporting lifestyle of our ancestors by developing our own economy through our business initiatives.
Through leases and joint ventures we have built meaningful business relationships that have created social and employment opportunities for both natives and non-natives in the South Okanagan. The Chief and Council of OIB are business people, and we desire to develop more business opportunities
And they've done an amazing job. Helps that they have a good location, just like the next band north, https://www.biv.com/article/20... who are happily leasing out their land for economic advantage.
Then there are the bands who have recently signed treaties, got out of the Indian Act (no special rights anymore), and into actual ownership. Generally they've just sold their assets for way too cheap and can't even claim a bit of the communal land to plant a trailer.
Russia and the Soviet Union. It's hard to claim that a country that went from wealth being considered how many serfs you owned to a space fairing nation in 50 years, while winning WWII through the sacrifice of millions of lives, and suffering under Stalin, didn't increase their GDP. At least their standard of living increased, they had a longer expected lifespan then the average American at one point, then went broke trying to compete with a country that could borrow trillions and was made up of mostly people that were motivated to move to the new world to make a success of themselves.
Other "successful communist experiments" include what was happening in civil war Spain, at least until the Stalinists showed up. Read some George Orwell. Or read about http://www.spookmagazine.com/w... http://webcache.googleusercont...
Sadly socialist revolutions, while easy to sell to a poor population, usually end up with corrupt leadership that fuck it right up. See recent events in S. America. We don't point to Saudi Arabia as an example of the success of capitalism or conservatism and most of the stories of communism are similar.
Personally I think mixed is best, take the best from all the systems. Think of the chief of the Osoyoos Indian Band, a very good businessman who is motivated to employ people, especially his people rather then to get disgustingly rich.