In my game, Age of Empires, a wealthy civilization is created from chopping wood, harvesting berries, hunting game, raising sheep, farming food, fishing, mining gold and stone, building mills, houses, towns centers, ships and manufacturing needed things, training people in universities and so on as the population builds.
I don't think a successful and wealthy economy can be based simply on the provision of mutual services such as grooming fleas, manicures, house cleaning, income tax return preparation, the writing of poetry or acting in plays. These sorts of services are secondary, the icing on the cake.