Hot take: I think the fact vector DBs are even a hot field with multiple competitors speaks to the bending of the branches due to VC weight, so to speak. These things take ~40 LOC and 3 hours to write yourself, they can process ~20 pages/seconds ms, locally, on devices from 3 years ago that fit in your pocket. Having it hosted is a massive privacy risk. Yet how many vector DBs as companies articles have we seen, and how many ONNX tutorials have we seen?