It’s shaping up to be a dry summer in the pop concert business. Few of the bigname stars of the 60s and 70s are touring And “steadily rising ticket prices, lack of proper development for promising young artists, stiff competition from other forms of entertainment and even age-old headaches like traffic snarls and limited (overpriced) snack-bar menus, are just a few of the reasons some fans have been staying away in recent years.