I’m not sure exactly what your question is asking. But in my personal opinion I do not think missing a milestone is a link to future success for a company in the long run. For example, when you miss a milestone, you most likely are compromising on understanding your product better and you are taking a risk when you rush through the timeline. When you have to fit multiple tasks in a tight timeline this is where most of the little details can be overlooked and you end up with future problems. For instance, your product being taken off the market in the future because a detail you overlooked has to come the attention of FDA or consumers etc.

However, I will also say it depends on what milestone you missed. How critical was it to your overall project. If its something that can be fixed or overlooked, than I do not think it is a bad thing.