Profit is just a proxy for business activity, it's not handed down from the gods as the correct way to assess tax. Doing billions of dollars of business a year is a pretty good sign you're doing business and can not only afford but ought to be paying tax.
All the HN bros who started businesses selling dollars for 90c clearly hate this take. Businesses right now pay CC companies 1-3% on every transaction to Visa, a small tax on revenue clearly hasn't killed all businesses. I know in your mind "taxes" means "Uncle Sam takes 30%" but when you're taxing a much much bigger number the percent can be lower, and flat.