I don't think the parish church tradition of the Orthodox Church calls for services to be held daily. I think it is for the monasteries to follow the daily cycle of all services. Most Orthodox calendars that I've seen, usually have an emblem of a dome (or a church) to indicate that the Divine Liturgy is called for on the particular day, for that particular feast.
However, the Western life style, and its Protestant dominated basis, doesn't lend itself to the congregation's participation in daily services. I am also thinking, that the history of the development of Orthodox parishes in North America, started, in many, if not most instances, with congregations using rented facilities, churches of other denominations--or store fronts often, that weren't available for use other than on Sunday's, which could be the basis of practices that didn't change as we constructed our churches. I've often thought that the practice of conducting Memorial Services (Mnymosina & Trisagion Services) following the Divine Liturgy on Sunday's, is due to the situation I've described in the second sentence of this paragraph. Aren't Memorial Services for specific individuals traditionally conducted on Saturday's, the day of the departed?