I'm sorry, but do you know what zero-sum means? Maybe go look it up. It's okay, you're one of today's lucky 10,000.

The market has grown in size. The value of crypto companies and market caps today is not literally the sum of the value of crypto companies and market caps 10 years ago. Ergo, not zero-sum. This is purely a mathematical statement about industry financials, not a moral judgement about abstract "value" in terms of societal contribution.