That's kind of arbitrary because Microsoft is an OS, apps, computer, and peripherals company; and Amazon is a retail, logistics, and cloud services company.

Tesla is a battery-based company, but could also have been a transportation company and included Boring and SpaceX.

And Mastercard and Vida are both bigger in payments than PayPal. And PayPal was mostly Thiel's Confinity, which merged with Musk's X.com bank.