Could you be a bit more specific? If you're talking something like an artist that works for an advertisement company that makes and sells billboard space that's one thing. If you're talking about someone on social media who is constantly posting videos that are effectively product advertisements for the free things they get shipped to their house that's another. Or are you talking about people in a sales position that more or less only make money on commissions?
"History Is Much Like An Endless Waltz. The Three Beats Of War, Peace And Revolution Continue On Forever." - Gundam Wing: Endless Waltz