James Surowiecki offers some evidence for 'yes':
... [F]or the industry to keep growing, customers must like this year’s designs, but they must also become dissatisfied with them, so that they’ll buy next year’s. Many other consumer businesses face a similar problem, but fashion—unlike, say, the technology industry—can’t rely on improvements in power and performance to make old products obsolete. Raustiala and Sprigman argue persuasively that, in fashion, it’s copying that serves this function, bringing about what they call “induced obsolescence.” Copying enables designs and styles to move quickly from early adopters to the masses. And since no one cool wants to keep wearing something after everybody else is wearing it, the copying of designs helps fuel the incessant demand for something new.