There are so many startups in the KV DB space that it's absolutely worth it. Now if one is a consultancy, they can very well used any available key value store

There are so many startups in the KV DB space that it's absolutely worth it. Now if one is a consultancy, they can very well used any available key value stores. But beyond a certain scale, it's very useful to try and customize a KV store. That's where it becomes useful.