it's obvious that for a company (money-making entity), that they're going to want to have a monopoly in providing the software aaS. That's the monetization strategy on otherwise free software.
I don't think this is surprising. We saw this years ago with AWS and MongoDB. Yes, a startup can offer Vault cheaper since they don't have to pay for developers to build the software, and, in fact, they get to offshore their support costs to the developing company too ("yay" OSS).
I don't like it, but for a corporation that is trying to develop OSS, it makes perfect sense.