It's easy to buy a bunch of hard drives and connect in a data center. Managing petabytes per user for thousands of users is the hard part, and it's a software p

It's easy to buy a bunch of hard drives and connect in a data center. Managing petabytes per user for thousands of users is the hard part, and it's a software problem. BackBlaze is definitely a SaaS company... though the quality of their offering certainly lags behind Dropbox, both in terms of feature set and user experience. They're also in a very competitive industry. Storage/backup is basically a commodity nowadays.