Did you become a PM by pitching a new product?

Hello!Aspiring PM looking for my big break following the advice I've gotten repeatedly from experienced PMs: Find a problem in a product you love and find a way to solve it.My idea has the potential to add revenue and streamline workflow for users thus making the company more money in their fees.Here is what I have done so far: Developed value propositionRough competitive analysis Identified potential partner for future integration Pitched a few users in the target market and have received positive feedback. I know this hypothesis will require deeper user research and experimentation for validation. My goal is to pitch it to the VP of Product at the company (no open PM role). What would you suggest my next steps be to flush out the pitch?How can one mitigate the risk of company simply running with the idea without you?