The barrier to entry is far from zero. Understanding a platform enough to make code fixes takes a fair bit of study beyond the most trivial project. For busine

The barrier to entry is far from zero. Understanding a platform enough to make code fixes takes a fair bit of study beyond the most trivial project. For businesses and government, support is often mandatory, and at the least, it gives administrators "people to blame" when something goes wrong. I feel open source with paid support is a very viable route for government, given it's general expectation of having paid support for the products it uses, but there's still an extreme minority of businesses successfully monetizing open source software.