The competitiveness of healthcare markets is decreased by all but: Question 25 options: a) the fact that many healthcare markets have only a few competitors which diminishes rivalry. b) the fact that the diminished rivalry can persist because cost and regulatory barriers limit entry. c) the fact that close substitutes may make the demand for an individual firm's products as well as market demand less elastic. d) The fact that price elasticities are large enough for healthcare organizations with some market power that they will lose all their business to rivals with slightly higher prices. e) All of the above. f) None of the above