OK its great that you want to change the world, but before you start looking at how, shouldn’t you consider (and outline) in what way you want to change the world. This way you can decide if the tools you are suggesting are actually useful for those purposes.
Basically you are saying money is the way to change the world, becasue money is power. (and you create value by making money)
First you however state that we improve the human condition by creating value ‘which is not an economic concept. It’s what people care about’
The way you then go on about fantastic money making through innovation in Silicon value I am sorry but reminds me of Thomas Friedman’s euphoric chant about america’s technology and innovation lead and model, and how the flat world is going to improve everybodys life, while totally ignoring the downsides of the drive for ‘efficiency’.
You suggest the only money makers not creating value are landowners, hmmm. I actually think they have an important and essential role in value creation. But I can assure you that there is lots of money making going on that does not create value. What about speculation? Sure you can see that as useful investment but i’m not so sure. A great deal of money making is not about creating value it is about making money. And making money can also have the effect of destroying value. For example, the critique on the way private equity works;emptying a company of its value and then moving on. And that is really only on example.

Venture capital is not going to change the world untill its gains are put in a charitable fund and used purposefully, neither is it going to lift living standards in the west if the capital it delivers it is not taxed .

By seeing money as a tool to have power, do you mean to imply that there should be a charitable model where the responsibility for changing the world is a matter of volunteerism (so a very american model, indeed it is more in the culture of teh US then in Europe to use your own money in a charitable way, this has to do with the fact the US does not have the redistribution system European countries in general have, where the the less privileged are not so dependent on charity. Yet the concept is not strange to Europeans and I think George Soros is doing a pretty good job)

To conclude: let’s not kid ourselves, we are not going to change the worl by making money. I think the first question we should ask ourselves is ‘how do we want to change the world? what’s wrong?where do we want to improve the human condition?’