Market cap is not really significant, if the sales are down. Most of the market cap is from old sales. I could create a new coin with a huge market cap very ea

Market cap is not really significant, if the sales are down. Most of the market cap is from old sales. I could create a new coin with a huge market cap very easily: I'm creating 1,000 billion coins, and I'm selling to a friend one coin for $1, then never selling anything again. The market cap is now $ 1,000 billion right?