I am working on some software that I would like to open-source. I want to build a business around the software though. Therefore, I have (seemingly common) concerns regarding a competing company using the software.

There are some source-available licenses that seem to offer most of the good parts of open-source and protect against my worries. However, I'm not sure if source-available or these licenses in particular are the right way to go.

https://polyformproject.org/

Does anyone here have source-available experience they can share? There are almost certainly aspects of this decision that I haven't considered.