What effect does a network externality have on the market for a product? if a network externality is present for a product, then a. consumers may be more likely to buy the product because it is more useful. b. consumers may be less likely to buy the product to avoid switching costs. c. producers may be more likely to supply the product to create path dependence. d. producers may be less likely to supply the product to avoid market failure. e. producers may be less likely to supply the product because it is less unique?