If the NFL sells you a $300 ticket the marginal cost of goods sold is zero. If Walmart sells you a $300 lawnmower, the marginal cost of goods sold is probably $280. So you're making a completely false comparison. That's why talking about revenue is meaningless.
But I guess I'm the one who doesn't know what I'm talking about.
Ho-hum, back to Donald and Elon.... their fights are more interesting.