DBaaS Without Virtualization

From Oracle OpenWorld 2013 conference, numerous Oracle experts expound on how DBaaS can be achieved without virtualization options:
1. Database consolidation in RAC for those who do not want to pay for the CDB/PDB license
2. Schema consolidation without CDB/PDB for those who do not want to pay for the CDB/PDB license
3. Database consolidation with RAC with PDB
4. Consolidation (Database/Schema/PDB) without RAC (Single Instance) and Active Data Guard (Redo Replication)
5. Consolidation (Database/Schema/PDB) without RAC (Single Instance) and GoldenGate (SQL Replication)

All the Oracle experts in the private database cloud claim that the above five options will satisfy NIST definition of Cloud Computing especially with ExaData and ExaLogic.