I'm not sure what would you like to simulate, but in the economy, you build models with a set of features you assume should influence the outcome, and then you can measure how well your model explains the reality.
I'm not sure if you're right that such a simulator would be valuable. The thing is that we already can explain quite well what's happening and have the means to fix stuff, but frequently there's no political will to do so.
1. Does the business solve a painful problem that is severe and frequent? If not, the project is doomed.
2. Does the founder <25 years old? Does the founder is a first-timer? Does the founder have experience raising funds? An inexperienced leader will have wet pants with the first obstacles (they will come).
1. You talk with real people, it's way more complex than doing a survey, but you'll get better data.
2. Talk to your customers or ask your potential customers if you don't have them.
3. Don't ask your friends, especially your mum - she'll tell you've got a great product because she loves you.
4. Important thing is to ask open-ended questions that don't suggest the answers.
5. You should see patterns after interviewing about 5-20 people.
6. Then, you use the answers and create a survey that will be statistically significant (about 384 respondents) - there're paid services that let you do that.
I'm not sure if you're right that such a simulator would be valuable. The thing is that we already can explain quite well what's happening and have the means to fix stuff, but frequently there's no political will to do so.