a. For firms, OSS reduces costs and the access to intellectual property expands because several users are improving the software daily. OSS is also very scalable and can keep up with the growth of a business. Other benefits are reliability, improved security, agility, and time to market.
b. By lowering the cost of computing, open source efforts make more computing options accessible to smaller firms. More reliable, secure computing also lowers costs for all users. OSS also diverts funds that firms would otherwise spend on fixed costs, like operating systems and databases, so that these funds can be spent on innovation or other more competitive initiatives.
c. OSS providers choose open source because once they make the first copy, the rest are free to make. After that, they make purely profits from users who are paying for support, consulting, more drive space, and training.