If you’re fundraising from financial investors, you’re agreeing to eventually provide them with an exit. The appreciation in value from the time of investment to the time of exit is a proxy for success. And that depends on factors like those you identified.
If you’re fundraising from investors with other motivations, success will mean something different. It might be whether you build a self-sustaining business, or it might be measured in terms of social impact.
By sharing your definition of success with your investors, you can work with those who are aligned with your goal. And that’s the first step to optimizing towards the success goal that you’ve set.