"General tech sell-off and Getty giving away "Free" images put pressure on Shutterstock.
Getty's move is not as bad for business as it looks.
Shutterstock has established and is growing a competitive advantage.
The company is growing fast but has only captured 4% of a $6 billion dollar market that is growing fast itself."

http://seekingalpha.com/article/2219623-shutterstock-the-value-of-a-growing-competitive-advantage-in-an-underdeveloped-market?dr=1