It's useful to others. It's just not useful to enterprises. This may be a positive or a negative depending on your intentions. You can read such a license as a

It's useful to others. It's just not useful to enterprises. This may be a positive or a negative depending on your intentions. You can read such a license as a kind of non-commercial use license. In fact this is exactly the business model of the SQLite project. They have a "cute" public domain declaration and then they sell actual licenses for a fee to enterprises that want to distribute SQLite worldwide.