On June 25, 2017, John Collison flew a four-seat, twin-engine propeller-driven aeroplane from Europe to the United States. It was an amazing journey for the then 27-year-old which demonstrated both his love of flight and his ability as a pilot. “Completed a bucket list item this weekend: flying a small plane across the Atlantic! 27 hours of flying over 3 days. Didn’t even get wet,” Collison tweeted afterwards. Stripe, the online payments company he founded with his brother Patrick, has propelled the duo to being probably the richest people in Ireland. The brothers have owned private jets for years, but…