My thought is not to restrict anyone from doing anything. Rather that, for example, any profit-seeking entity can use any code, but that that profit-seeking entity must pay a standard and proportional fee to the license-holder of that code, generally its author(s) and/or maintainer(s).
Does that qualify as "restricting anyone from making use of the program in a specific field of endeavor"? Going by the wording, I would lean toward "no".
Furthermore, while on that page I glanced at the other paragraphs, and I couldn't help but notice that according to #9: "License Must Not Restrict Other Software" and its text: "The license must not place restrictions on other software that is distributed along with the licensed software. For example, the license must not insist that all other programs distributed on the same medium must be open-source software.", the GNU/GPL don't qualify as "open source" software.
It is to laugh.