My friend doesn't believe in open source projects, especially in a crowded market.<p>How do I convince him that with open source we build awareness and indirect income?<p>What are the pros and cons of open source?
Just ask your friend what all websites/web applications does he use on a daily basis, there should be something from open source out of that set. I believe many websites make money using open source technologies and many companies/startups release their technologies as open source helping others benefit out of it. Current tech scene would never have improved without open source community and collaboration.