LÖSCHIAN COMPETITION VERSUS SPATIAL COLLUSION: PRICE AND WELFARE COMPARISONS*
研究了异质成本条件下洛施双寡头垄断与空间合谋的差异，发现空间合谋在消费者剩余和生产者剩余上均优于洛施竞争，可能带来福利增益。
ABSTRACT. Löschian duopoly under heterogeneous cost conditions is examined to show that it is not equivalent, contra past findings, to spatial collusion. Moreover, within the confines of the assumed demand and cost conditions spatial collusion is shown to be superior to Loschian competition in terms of both (aggregate) consumer surplus and producer surplus, which implies a possible welfare gain from collusion. A general, if not the general, prices‐and‐welfare comparison of alternative pricing schema including collusive, Löschian, and optimal pricing is summarily presented in a table.