General Electric keeps making refrigerators and jet engines. The list goes on and on. Their stockholders have little to worry about. The stock market is the heart of the capitalist system. It has losers as well as winners.
Newcomers take off and soar, making founders rich and good money for backers and workers.
A dozen others with seemingly good promise founder and fail, passing on unremembered. The stock market is run by and for humans, combining frailty as well as strength, as do its customers. These combinations make it certain that the market will, from time to time, go into convulsions, with peaks high and valleys low. On occasion, the statists cry woe, the sky is falling, while birds keep singing, roosters keep crowing and the moon stays in orbit as it has for millions of years. Enter words describing a concept or keywords.