This document discusses opportunities for building businesses based on open source software in the cloud. It outlines some historical context on open source beginning in 1983 and common pain points users experience with open source like difficult installation, lack of documentation, usability issues, and lack of support. However, these pain points can be addressed by building open source software as a cloud-based software as a service where there is no installation required, an elastic architecture, good documentation and support provided as part of the subscription, and fast bug fixes from a dedicated paid development team. Examples of companies like Indekspot that have built businesses this way improving on-site search and content filtering are provided.