One possible way to read “The Facebook Files,” The Wall Street Journal’s excellent series of reports based on leaked internal Facebook research, is as a story about an unstoppable juggernaut bulldozing society on its way to the bank.

... But there’s another way to read the series, and it’s the interpretation that has reverberated louder inside my brain as each new installment has landed. Which is: Facebook is in trouble.

Not financial trouble, or legal trouble, or even senators-yelling-at-Mark-Zuckerberg trouble. What I’m talking about is a kind of slow, steady decline that anyone who has ever seen a dying company up close can recognize...

A good way to think about Facebook’s problems is that they come in two primary flavors: problems caused by having too many users, and problems caused by having too few of the kinds of users it wants — culture-creating, trendsetting, advertiser-coveted young Americans.

The Facebook Files contains evidence of both types. One installment, for example, looked at the company’s botched attempts to stop criminal activity and human rights abuses in the developing world — an issue exacerbated by Facebook’s habit of expanding into countries where it has few employees and little local expertise.

But that kind of problem can be fixed, or at least improved, with enough resources and focus. The second type of problem — when tastemakers abandon your platforms en masse — is the one that kills you. And it appears to be the one that Facebook executives are most worried about.