Interesting discussion!
“All eggs in one basket” = all data on Dgraph. Is that what you meant @MichelDiz ?
@Juri Graph db is the future and horizontal scaling with HA still allows you to link data/edges across clusters just not across tenants. Multi-tenant is logically separated and cannot be joined across in a single query. But I believe HA allows multiple fails without any data loss and if properly managed could be setup to autoscale on failure I believe.
But it is still all one codebase if there is a fault in the code it could be on every instance. I think that is what Michel meant by all eggs in one basket.
But overall I foresee and even predict that different big data projects unite into a single world wide data graph with SSO and ACL granular controlled with RBAC and ABAC.