Combined market cap of the four behemoths: a whopping $5 trillion. For context this is the list of the top 10 countries by GDP per the World Bank (2019). Notice that if these four companies were a country they would be ranked either third or fourth in the world!
Putting Things into Perspective
It took over 200,000 years of human history for the world’s population to reach 1 billion; and only 200 years more to reach 7 billion. That is an astonishing example of exponential growth.
If I were to ask you how long do you think 1,000,000 seconds is what would you guess? Go ahead, take a guess and convert it to an equivalent number of hours, days, months or years.