> Your database is now handling your normal transactional workload, analytical queries, AND maintaining graph structures in memory for vector search.

No. No one in production is trying to use the same instance for all of these use-cases at scale. The fundamental misunderstanding here is assuming or even "demanding" that one instance should be able to provide OLTP, OLAP and vector ops with no compromises. The workloads are fundamentally different and doing serious work requires architecting the solution much more intelligently.