It’s not every day that a person loses US$6 billion, so when Michael J. Saylor did exactly that in the 2000s at the height of the internet bubble, he definitely made a name for himself. Two decades later though, the 57-year-old CEO and co-founder of business software firm MicroStrategy has ridden the roller coaster all the way back up again. He did so by staking his company’s future on bitcoin – showing even more passion for the world’s biggest cryptocurrency than such tech visionaries as Elon Musk and Jack Dorsey. So who exactly is Saylor, what is his current net...