I think it is very pessimistic to suggest that money is the greatest motivator. In fact it makes me ashamed to be human.
In a world with no money, technology would advance to improve the lives of the population and their children. Instead in a capitalist world, the rich get what they want, which doesn't necessarily improve the lives of the population, but it does improve their bank balance.
We shouldn't be using oil to fuel our cars, we should be using electricity generated by solar power, which would cost next to nothing and is sustainable unlike fossil fuel. Instead we pay through the nose for petrol.
If capitalist companies could have their way, they would charge you for the air you breathe. They've already fooled you into buying bottled water.