When I started writing and publishing open-source software about 15 years ago, I was pretty radical about it. I only used permissive licenses like MIT or BSD, as all I cared about was reach. Using a copyleft license with strings attached seemed to hinder that reach. Getting another A-category company to use my open-source libraries like Nodemailer was a badge of honor. I even went so far that when
{{#tags}}- {{label}}
{{/tags}}