Corts [Economic Lett. 47 (1995) 417] showed that when allowing for price-be
ating policies in addition to price-matching policies, the competitive outc
ome prevails in lieu of monopoly pricing. I show by expanding the strategy
set further to include effective price strategies, the possibility of monop
oly pricing is restored. (C) 2000 Elsevier Science B.V. All rights reserved
.