Why Hasn’t Economic Growth Killed Religion?

Economic growth has not led to a decline in religion despite past predictions that it would. I use a formal model of religious competition to show how economic growth produces counteracting effects on religious participation in an open religious market, while economic growth will have little effect in a religious market that is already secularized due to religious regulations. Theories predicting the decline of religion due to rising opportunity costs of religious demand and supply ignore countervailing influences.