Super fair question haha. I'm gonna flip this question first because I think it perfectly frames the current landscape of startup/SMB treasury products

Say you (like many startups) use Mercury Treasury, Rho Treasury, Brex Treasury, etc. Most of these list somewhere exactly what funds they buy into. Why not just open a fidelity account and by them yourself?

The answer is pretty clearly ease of use. Easy to move money from your bank account (likely also with them) to their treasury, easy to set up rules like ("if my bank balance falls below $X then transfer $Y from treasury"), stuff like that

We provide all of these features too! We are not at all asking people to bank with us or spend the time/friction of actively managing their deposits

So if the ease-of-use is the same and the yields are roughly 40% more than the generic money market wrappers out there, we think it's a no-brainer

(EDIT: adding mention that I am OP's co-founder)