That’s the story, but it’s bullshit. The underlying intrinsic value of a stock can only be materialized if the company liquidates and you receive a share of the sell off of its assets. How many publicly traded companies abruptly decide they’re tired of the business, stop in their tracks, and liquidate their assets? This only really happens if the company is acquired or if it goes bankrupt. Acquisition is the closest the story comes to truth, but it’s also just forced sale to a greater shmuck. If a company goes bankrupt, a tiny fraction of the current stock price would be realized into cash for common investors because of all the privileged investors and lenders ahead of them, not to mention that the actual value of capital assets etc probably doesn’t cover all the losses (the company’s going bankrupt after all). The value of the underlying capital assets are essentially never returned to the common investors, and the idea that you own a portion of them is in practical terms a lie.

It's not purely the liquidation value, it's the idea that the liquidation value will continue to increase, or profits will be paid out to owners.