Although if you did earn $5k per day and managed to invest at a yearly return of 3% above inflation, you'd have about $41 trillion

At 1% above interest you'd just have $3.6 billion so invest wisely

(edit, corrected the numbers)

Okay so then how is he worth that much?

These memes and stories are like, "its unbelievable that Bezos is worth so much money", no it makes perfect sense!