If you had spent $10,000 in 2015 to buy ETH and held onto it until now

it would have turned into $200 million

It sounds easy: "Just hold on, right?"

But if you really lay out the profit curve, you'll find that those 100,000 ETH

the journey was completely beyond what most people could handle:
10,000 → 1,000,000 → 14,000,000 → 390,000 → 30,000,000 → 1,200,000 → 93,000,000 → 530,000 → 323,000,000 → 54,000,000 → 200,000,000

Ask yourself again: Can you really hold on?