I think there's an important distinction to draw between the problem you want to solve (your vision, the ethos of your company), and how you plan to go about so

I think there's an important distinction to draw between the problem you want to solve (your vision, the ethos of your company), and how you plan to go about solving it (your product idea, your go-to-market plan). You should stick with your vision, but not tie your ego into how you originally planned to execute towards that vision.