It's rather easy to come up with alternatives to the current system of American based capitalism. Even ones that would work better.
The problem is of course that we cannot start from a blank slate. The current people in charge will not give away their power so we can have a better system for all.
That's what capitalism has been all about the last few decades/century. To increase the powerbase of a few. To channel the riches to a select few and increase the riches that are channeled to a select few, and make those select few even fewer. That's all there is to it. No magic. We don't really enter the equation as such, other than being the tool with which the select few enlarge their powerbase.
It's obvious to anyone who keeps his eyes open, but still nothing changes. That is because most people are completely and utterly powerless in this system of modern american based capitalism. The only times there have been changes has been through revolutions.
In Europe capitalism took a different course than in America to start with. But globalization killed that off in more recent times. The pressure has increased to adopt to the system of the USA.
Economic Growth uber alles! (above all we need economic growth)
And what is economic growth? More riches for the rich.
What is reality? The pair of pants I bought 3 years ago are just as good as the ones on sale now. Strangely enough the new ones are 5 Euro more expensive. Nothing in the product has changed. Nothing at all. It is still the same pair of pants made in the same factory/sweatshop. How can it be more expensive? Inflation. Inflation doesn't make the select few poorer. It does seem to affect the average person.
How realistic is to have a system that is based on economic growth? It's totally bogus. Economic growth can never be sustained in the long run. Economic growth is a tool to make a few people richer. It's not adding anything to the world.
If a country has on average an economic growth of 2% every year how can it be then that things get worse? What is the whole point of the system then? To make society better? Or to cater for a select few?