I believe that most of the people here on HN would like to "make their mark". Starting a company is one way to do so.
As far as things moving away from materialism, I doubt it. I feel that as we get older we learn to value the less material things. Look at the nearest teenager and you'll see what I mean (or even look back at yourself as a teenager).
This is all dependent on where you're from too. The US is extremely materialistic. Historically, what you own is a measure of how successful you are(Or how big of a mark you've left). The metric for rating the size of your mark needs to change before we can even begin to move away from materialism.