Dropbox is in a tough situation because they're charging 5x as much as competitors for roughly the same service (I'm comparing the monthly 100gb plan), yet they can't lower the price because they likely have a massive number of customers who are fine with paying $10 / month and/or don't know about cheaper competitors...so the price will likely stay put until they start to see signs of their existing base churning out, but by then their competitors may already have won over a lot of mindshare.