As with all Google-based services Drive is expected to offer a limited amount of storage to consumers and businesses. Users needing more may have to pay a fee, which is the same way that Dropbox and competitors operate anyway – this will all obviously be shared with the storage you have on your Google account anyway. (So for those who purchased extra Gmail storage)
Google is expected to launch the service with a dedicated Android app, and supposedly a desktop extension and iPhone app are in the works.
The infrastructure that Google currently has may actually give them a head start in the cloud industry, with their already humongous data centers being expanded monthly with millions of dollars worth of extra drives and servers.
Google Docs and Google+ are to be integrated, and therefore sharing will become easier for people who use the social networking side of Google, and people (such as myself) who use Docs for backup and archiving – emailing thousands of split .RAR files to myself will finally be a thing of the past I hope.
Windows Live SkyDrive gives the user 25GB of storage, so I really won’t be surprised if Google plan on outdoing Microsoft. 25GB of storage, however, has not given Microsoft the lead in the free cloud storage department, with figures suggesting that Dropbox is still the consumer favorite.