Apple's iCloud has really put the squeeze on Dropbox for Mac users however. With tight integration with iOS devices as well as the desktop and even Windows users to an extent, iCloud is positioning itself as the go to option for consumers with iDevices. Amazon has just recently worked to expand their cloud storage options to the desktop with an actual client as opposed to web based interfaces. Amazon's services live and die with the popularity of the Kindle platform, with recent news that the Kindle Fire isn't selling as well as it used to, Amazon still faces a long battle to capture the cloud for consumers.
Which brings me to Microsoft. Microsoft has, until recently, been seen as an "oh, by the way, we do cloud storage too," sort of offering. While SkyDrive used to offer more storage out of the gate than the other big companies, their recent reduction to a starting 7GB (Still larger than all the other companies I've listed) shows that Microsoft is expecting usage of their service to skyrocket with the introduction of Windows 8. The new Windows client that ties SkyDrive into Windows' Explorer brings the cloud services in line with all the other major players, with a tightly integrated Windows Phone and iOS app, Microsoft is clearly taking the entire venture very seriously.
Consumers may at first, and I don't think this fall will mark the end of Dropbox. It will be a slow gradual decline. I've already noticed it myself. I use my Dropbox less when it comes to my computers, the main purpose it serves right now is auto-uploading the photos I take on my phone so I can access them on my computer and add them to my Skydrive. Much like when Gmail first arrived and began offering tons of storage space, and others sprung up to copy the offer, people started getting email addresses wherever they could, right now people are grabbing up Gigabytes wherever they can get them online, but the mad dash for cloud storage will only last so long, and when the dust settles, much like it did with email, the remaining ones will be the ones who offer the best service.
Right now Microsoft and Apple are in position to offer the best service to their respective consumer base. Tight integration into their operating systems, coupled with compelling devices that make use of a single account to manage a customer's digital life will mean that because consumers haven't embraced the web-only philosophy Google is pushing gives Apple and Microsoft the edge. The question is, can both tech titans make the most of the edge they have or will Google, Amazon or Dropbox be able to convince consumers that their add-ons are worth the trouble of downloading for a better feature set. My money is on Apple and Microsoft.