Which companies would use this and why? Data worth making private is also worth some $$ to the business hosting it.
In other cases, for the same compliance and data security reasons behind the desire for on-prem, larger enterprises prefer that their SaaS vendors collect as little data about them as possible. Blyss can get you the best of both worlds: the data security of on-prem, with the convenience and ease-of-deployment of SaaS.