Enterprise is very conservative - especially when it comes to storage and data security. There are even laws in some countries that restrict certain data being saved to cloud storage due to national security and privacy concerns. Even though, in theory, SIA is secure because of sharding and encryption that might not be enough to convince a judge.
When I was talking to an enterprise guy who's setting up a cloud locally, he was super cautious about trusting even technology like CEPH. They're cautious for very good reasons.
So this is a very long-term play. Meanwhile going after home backup and SMBs might be a better near term play. I see SIA has some work in that area too. We'll see.