I wouldn’t even bother with that much. You’re comparing international corporations’ reported revenue with one measure of one country’s general economy. I know a lot of us here are from countries that are either really really big or really really rich or both, but most countries are not really really big or really really rich. The only thing reported revenue, GDP, and market cap have in common is a unit you can denominate them in, but GDP as measured in dollars or euros or whatever still isn’t money in the bank (and neither is market cap).