. . . "The mass portrait business has long been dominated by leased department operations by firms like CPI, which serves about 1,000 Sears stores; PCA, with about 2,400 Wal-Mart locations plus 1,000 'traveling stores;' Olan Mills, serving K-Mart, Toys 'R' Us and other retailers plus a large church customer base; and Lifetouch, an employee-owned firm with studios at JCPenney and Target along with a large" . .