As recruter says, storage is a commodity. If google raises its prices you could easily move your files onto another service.
Yes, I could move easily, but by supporting the company with monopolistic behavior, I may not have any options left.
Which makes me unsure we will ever see one released externally, it must be the support cost that holds them back. Internally, they only have to support one distribution (their own) and some very smart users.
Furthermore, I get the impression there's an increasing fear of becoming a false positive on Google, therefore losing all of your data somewhere in the cracks of the Goog, with basically zero recourse.