There's nothing unusual about charging commercial users of a product while not charging non-commercial users. Academic and non-profit discounts, down to making

There's nothing unusual about charging commercial users of a product while not charging non-commercial users. Academic and non-profit discounts, down to making your product free to them, are extremely commonplace. There's nothing unusual about sponsoring interesting projects, or making special arrangements when it's mutually beneficial. Giving a tiny customer free access forever, and getting a bunch of goodwill associated with their brand in return, is not a liability, it's good business.