Calculating the monetary value of a brand seems pointless to me. Nobody would pay 299 billion only for the sake of owning the brand "Amazon".
The actual people, who work in the company are the ones, who make the brand valuable.
The brand "Amazon" would be worthless, if Amazon was managed poorly and the customers were unsatisfied. The same thing applies to Google, Apple, Samsung and the rest of the companies. I'm not a big fan of Tesla and TikTok, but who cares.
The company's brand is just a shiny package without any content inside.
By the way, I'm surprised that Meta/Facebook/Instagram isn't in the TOP 10. Maybe that's why Zuckerberg is desperate, so he created this "Threads" app.