Marx and develpoment

The bourgeoisie run the world. Marx spends the entire first chapter explaining how the rich are the reason for everything that happens because the rich control everything. He argues that our system is so unbalanced because the rich always have to change and adapt industry for their own self-interest. He seems to imply that this is a bad thing. I would disagree. While the bourgeoisie often exploit lower classes for labor, they are the ones who are pushing for development. I understand they are doing it for selfish reasons, Marx says that eventually the proletariat will overtake the bourgeoisie and they have to adapt for survival, but they are still the ones who are advancing society. Without some amount of greed among people there would be no incentive to work hard, develop new technologies, or make advancements in agriculture and medicine. Even when the proletariat take over for the bourgeoisie in order to stay on top and get ahead advancements have to be made. I think it is true that people are material based. All standards of life are measured on how much one owns. Marx says this is a bad thing and that class needs to be eliminated in order for people to live peacefully and happily. I disagree. I think a person is only as happy as they make themselves. People have a right to seek wealth, property, and family. Communism takes away this right. If people are limited in the amount of these things that they can have what incentive is there for them to work hard. And if people are not working hard everything else in society suffers.
In some respects I agree with Marx. The super rich should not have all the power and the poor should not be taken advantage of the way they are. I just think there are other ways of governing people so that everyone has a fair chance at the same liberties.