I've got contractor buddies that all they do is install epoxy floors in commercial and industrial settings (locker rooms, restaurant kitchens, airport bathrooms, grocery stores, etc, etc, etc,) . They travel the country and do it for some well known companies. They have all the tools, the know how, the employees at their disposal.
Their shop (welders, grinders, job boxes, some light forklift traffic) they just prettied up. Did they use epoxy? Nope, they stained and sealed it. I asked them why, and they said for the light use they use their shop, epoxy won't hold up in the long run.