Are you talking about having a thin client that talks to a private cloud instead of each client's data residing on the vendor's server? One of the hurdles is th

Are you talking about having a thin client that talks to a private cloud instead of each client's data residing on the vendor's server? One of the hurdles is that the server side of apps require more than reading and writing files. Full text search, recommender/ml jobs etc. Apps don't just need file systems, they need CPUs. If an app could be installed on a server and sandboxed (so for example multiple apps could share an ElasticSearch instance without being aware of each other) this would be a big step forward.