Maybe moral obligation is the wrong phrasing. But if you are major company with investors, perhaps a fiduciary responsibility to your shareholders and customers

Maybe moral obligation is the wrong phrasing. But if you are major company with investors, perhaps a fiduciary responsibility to your shareholders and customers to fund the software? The correct model likely looks something like a foundation to support core infrastructure projects in the open-source ecosystem. This foundation is then funded by companies most dependent on that infrastructure.