But I'm not so sure it would be ideal. There are things which thrive better as closed source. I prefer closed source IDEs, they tend to be better designed with better long term vision. Most open source projects suffer from a lack of long term vision, tight design, and funding. There are some which do well in those, but not the majority... There are quite a few things that thrive better as closed source which would have little chance as open source projects.

Proprietary closed source has a built in mechanism for funding. That's a major plus.