Obviously, individualism and collectivism are both important in a successfully functioning society. The critical issue is maintaining a balance between the two, that is, maintaining individual rights within a society that also recognizes collectivism as a way to pool resources and diminish risk for the greater good. Infringe the rights of individuals and a society becomes inefficient, corrupt, stodgy, boring and, in the extreme, authoritarian. Individuals provide ideas, dynamism, energy, and enthusiasm to a society/economy. Collectivism allows a society to exploit benefits such as insurance, monopolies (e.g., utilities), and mutual funds, etc.
I'm an independent (i.e., individual) inventor, which is not an easy way to make a living, although I've done very well. Without patent laws to protect my inventions, large, wealthy companies would steal my ideas without recompense and I would have no reason to take risks and work hard to develop my ideas. These are ideas that collectivist, risk averse groups, such as large companies and Governments, would never conceive, much less develop. (Large organizations should be risk averse. Lack of sufficient risk aversion by groups who should collectively have known better partially explains the current lousy economy.) So, I take the upfront risks of developing and implementing my ideas and license them to large companies that have the resources to commercialize them. Society collectively has benefited from the actions of individual inventors, and this is recognized and protected in the US Constitution, as well as by most other nations.