As a business owner that meets other business owners every day I believe "luck" is not that important.
There is a lot of space for normal business in the world, that solves a problem, give a service or creates simple products. You can be good at it or not. Most successful owners I know are not lucky at all.
Luck applies to the "changing the wold" thing, but 99% of business are not that way. People at HN has a distorted view on that reality.