After starting the public beta, I heard the following sentence several dozen times: "This looks amazing! Does it handle streaming?" And thus began the quest I am currently on.
About the only advice I can give is to keep practicing and keep an open mind. The feedback will get less negative the more you hone your pitch.
Do you have customers, or potential customers in the pipeline?
For example, a crypto broker wants their traders to write their own models. A stock-exchange advisor wants their asset managers to compute their own transaction costs. Etc.
Basically, Empirical will be a value-add component for existing customers of these larger providers. Instead of shuffling market data over the Internet, the user will "send the query to the data."
Every firm I've shown Empirical to has had the same word-for-word response that most end users have had: "Does it handle streaming?" I put the sales calls on hold while I try to get this done.