I get the feeling that every model for a business making money from open source has some sort of perverse incentive.
You can get good alignment in contracts that pay developers to write new software. And you can get good alignment in license agreements that pay for software already written. You can get good alignment in traditional software-vendor combination contracts for licenses or services plus maintenance and support.
Depending on what you mean by "open source", a substantial number of potentially well aligned models go out of bounds.