> I think $200/month for a full-network index (as zeppelin does) is very reasonable and approachable for organized groups without external funding.

I didn't know about these recent attempts, they're impressive for sure. However they write[1] about zeppelin:

"The cost to run this is about US $200/mo, primarily due to the 16 terabytes of storage it currrently uses"

So when you here give that $200/mo cost as a price point for "organized groups", you are forecasting that the cost of storage will go down as fast as the BlueSky data size grows? At what rate right now is the data size growing? Because the last numbers I saw were something like 2TB, so it being already 16TB sounds like $200/mo is not going to be enough very soon.

[1] https://whtwnd.com/futur.blue/3ls7sbvpsqc2w