Because two key parts of the open source definition[0] are that the license "must not discriminate against any person or group of persons" (criterion 5) and tha

Because two key parts of the open source definition[0] are that the license "must not discriminate against any person or group of persons" (criterion 5) and that the license "must not restrict anyone from making use of the program in a specific field of endeavour" (criterion 6). [0] https://opensource.org/osd https://opensource.org/osd