A project ending as abandonware is always a possibility. One reason projects get abandoned is losing funding, which can be secured by using dual licensing and selling some features to businesses.

That is not my point.

Having a CE or OS version and an Enterprise Version can lead to conflict of interest. Do you add a feature to the OS Version or do you spend time on the Enterprise feature? There are a lot of examples, Emby is one, others are escaping me right now.

There are other models that work well like paid support etc. Nonetheless i will stay away.