When will the DVD business of Coinstar (CSTR -1.3%) become fully saturated? The answer depends on who you ask with Wedbush seeing revenue falling even as new kiosks are being added while B. Riley isn't so sure the lack of blockbuster films in Q1 isn't a big factor in Coinstar's sluggish DVD business. During its earning conference call, execs noted the company is taking back market share as competitors peel away and think Coinstar will continue to have an advantage in the market for new releases. (transcript)