Interacting with colleagues is like compatibility of programs, tools or machine parts – an individually very good component may be useless if it does not fit with the rest of the machine. A potentially very productive worker who does not work with others in the company does not contribute much.
The difference between an individual and a firm may be horizontal (different cultures, all similarly good) or vertical (bad vs good quality or productivity). The horizontal compatibility with colleagues includes personal appearance – wearing a shirt with a left-wing slogan may be fine in a left-wing company, but offend people in a right-wing one, and vice versa. When colleagues take offence, the strong emotions distract them from work, so a slogan on a shirt may reduce their productivity.
Vertical fitting in includes personal hygiene, because bad breath or body odour distracts others from work. Similarly, loud phone conversations or other noise are disruptive everywhere.