The super successful people I know spent a very long time pursuing their ideas, way past when most people would have given up. Not to take away from his advice

The super successful people I know spent a very long time pursuing their ideas, way past when most people would have given up. Not to take away from his advice on giving up but is there survivorship bias in this statement? How many people persist for just as long (or longer!) and still fail? I think it might be more useful to look at success/fail rates for various levels of persistence.