According to Elon Musk’s own math, the company formerly known as Twitter has lost 90% of its value and could be worth just $4 billion

When you have a net worth measured in the billions of dollars, it's genuinely impressive to be able to lose money. With that kind of sum behind your name, you could just do nothing and out-earn most people on the planet with just interest alone. To actually be able to lose money? Now that takes work!