It's so sad that people still believe this lie.
It creates a victim-blaming mentality of assuming that anybody that failed simply didn't try hard enough.
Sometimes, the success of a business comes down to just being at the right place at the right time. Sometimes, it's just a matter of having rich parents that gave you enough seed money that you could actually dedicate time to your business rather than having to work 40 hours/week just to pay the bills before being able to spend any time on your business.