The quote critiques a person's approach to business, suggesting they lack maturity and professionalism. This individual is likened to a child who is merely imitating adult behaviors without a deeper understanding of what it means to operate successfully in a business environment. Their perspective is naive, viewing business attire and conduct through an inexperienced lens, as if still in their formative years.
The author contrasts this child's play with the expectations of real business professionals, implying that true competence requires more than just outward appearances. To succeed, one must embody the attributes and insights that come from experience, rather than superficial mimicry. This calls for a more profound engagement with the realities of the business world, beyond dressing the part.