If they are experienced enough to fish in the right place, they increase the possibility of catching various fishes. But they will catch the big fish if they are also luckly.
Luck is certainly a parameter in the success of an entrepreneur but no one knows the weight of this factor in the final calculation. For some people, it may be sheer luck, for others it is just a 1%.
If luck is important, then do we have control on our luck? Sometimes luck is something which people attribute to others who selectively perceive opportunities.
Moral of the story: If your mind is tuned for receiving opportunities (open-minded), you are already prepared for the opportunities. Other people may call you lucky, but you know the secret. Dream, work hard, and believe that you can succeed. Then, just wait for the miracles.They will come sooner or later, but they will certainly come.