Is there any symbolism for 3 wishes in fairy tales?

The number three has always had cultural significance, particularly in the West. Tales from central Europe often have groups of three in Fairy Tales. For example, if one can pluck three hairs from the sleeping devil they will be granted their deepest wish. The number three is everywhere, three bears, three little pigs, three guesses, three Billy Goats Gruff, three witches, three fairies. Often rewards for Fairytale protagonists are the three wishes. People attribute the number three to the Holy trinity, which in fact predates Christianity, relating to the different stages of the Egyptian Sun god, Ra. Rising, Noon, Setting. Birth, Life, Death. Mind, Body, Soul. The list goes on. The significance of the number three ultimately comes down to mankind's acceptance of mortality. We are born, we live, we die. In times when our ancestors hunted to stay alive, we faced life and death everyday. It played a significant role spiritually.

But why three wishes? These could well be wishes for life, mainly past, present and future life. To fix what was, to improve what is now and to prosper in times to come. Simple human survival.