It's not just startups -- businesses tend to focus on earning money. I don't know if we can realistically expect private industry to take an interest in social or economic problems. At the lowest level, there are founders trying to choose a niche that gets them from debt to break-even as quickly as possible; at the highest level, you get into transnational corporations which act only in their own interest.
I would be happy if Apple or Google were to dump their excess billions into social welfare or government reform, but it is vanishingly unlikely.