One rationale for pursuing related diversification is to obtain market power/dominance. In the US, too much market power may result in a challenge by the US Justice Department, because it may be perceived as anticompetitive. In what situations could related diversification be considered unfair competition?

  

One rationale for pursuing related diversification is to obtain market power/dominance. In the US, too much market power may result in a challenge by the US Justice Department, because it may be perceived as anticompetitive. In what situations could related diversification be considered unfair competition?