I think security and cost are the key factors for small companies or startup to consider Storj a better alternative than anything else on the market right now. So Storj should pay more attention to target this market.
For general users, free space on dropbox, google drive, one drive and etc. are probably more than enough. For big companies, they generally use their own SAN or etc, and big corporate are slower to change their plan or adopt this new technology, even it is much better technology.
I think adoption of storj will come naturally in both the consumer and the corporate markets. Consumers are getting more and more concerned with protecting the privacy of their data, and are being reminded of the real price they pay for the "free" storage they are getting from dropbox etc. every time there is another breach of a corporate database.
Big companies´number one concern should also be the security of their databases, so they are likely to move away from centralized insecure storage services and into decentralized encrypted cloud storage as offered by Storj. The expected lower price point of Storj vs their present storage providers should also be a significant economic incentive for them to switch.