We examine the rivalry of strategic groups of formerly regulated carriers and low-cost entrants. Profit effects stemming from strategic interactions at the group level and resulting in product differentiation are considered. A conjectural variations model, addressing a critique by Corts, is used to test the hypothesis that group-level effects stemming from product differentiation lead to asymmetric behaviours by both groups of carriers within and between strategic groups. The effects of group-level strategic interactions on firm performance are analysed for two of the busiest and highest density routes in the Spanish domestic market. We find evidence of asymmetric rivalry behaviour within and between strategic groups.

我们研究了以前受监管的运营商和低成本进入者的战略集团之间的竞争。考虑了源自集团层面战略互动并导致产品差异化的利润效应。一个针对 Corts 批评的推测变异模型用于检验以下假设：源自产品差异化的群体级效应导致战略群体内部和战略群体之间的两个运营商群体的不对称行为。针对西班牙国内市场中两条最繁忙和密度最高的路线，分析了集团层面战略互动对公司绩效的影响。我们发现了战略群体内部和之间不对称竞争行为的证据。