Most of the leading companies in top industries operate as stock companies. After the company reaches a certain stage of development, the future prospects and estimated market value of the company are evaluated.
Then, once the company has reached a certain stage, a portion of the stocks will be listed according to the valuation.
Thus, when many companies claim to be worth trillions, it doesn't necessarily mean they actually have trillions. Especially in the internet era, a company worth 200 billion might only have actual assets of tens of billions, and might not even be profitable, still burning through money.
During the early stages of a company's development, it raises funds through listing—what some companies refer to as cash grabbing.
