The situation where this usually comes up in the proprietary world is where someone wants to use their own laptop (non-commercial license) at work. This contravenes the license terms.
In this case it may be entirely reasonable to run fedora in a commercial environment.
Australian charities have been running foul of this sort of thing. People have been using their home-edition software for the charity work, or the charities computers have been used with (gratis) academic licenses. This has counted as a commercial environment because of the way many charities raise money in Oz.
With the new awareness comes caution.
Of course, lots of people are
confused by the "free" nature of gnu/linux as well. This, along with certain industry CEOs insisting that linux is non-commercial, can lead people to think that they are not allowed to use linux at work. <sigh>
Which distro one should be using depends on personal taste and the workplace environment. We cannot really give good advise on this without knowing more.