There is no such thing as a failed soldier, dead or alive (unless he acted in a cowardly manner)—likewise there is no such thing as a failed entrepreneur or failed scientific researcher. -Taleb
Taleb encourages us to take risks, even though most of us will fail. Real progress is often achieved through failure, by figuring out what doesn't work before someone figures out what does work.
We don't stand on the shoulders of giants, we stand on the backs of the failures, piled ever higher because our ancestors kept fighting.
Capitalism offers a great reward in this life for those who achieve success, but capitalism only goes so far. It's an incentive, but a temporal and rational one. The capitalist thinks in terms of cost and benefit, opportunity costs and marginal gains. If the math doesn't work, the capitalist moves on to other ventures. Wealthy societies take fewer risks.
To maximize risk taking, maximize the number of "fights" and also maximize the number of failures and successes. There's going to more failure than anything else. Most people avoid failure.
Who has the best message for failure? The ultimate "failure", Jesus Christ.
2 Corinthians 12:9-10
But he said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Therefore I will boast all the more gladly of my weaknesses, so that the power of Christ may rest upon me. For the sake of Christ, then, I am content with weaknesses, insults, hardships, persecutions, and calamities. For when I am weak, then I am strong.
More than that, we rejoice in our sufferings, knowing that suffering produces endurance, and endurance produces character, and character produces hope, and hope does not put us to shame, because God's love has been poured into our hearts through the Holy Spirit who has been given to us.
Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:
For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
Blessed are the meek, for they will inherit the earth.