The stock has significant impact on the company's ability to raise money for things like building out a 5G network. If the company wants to raise capital, they need to sell more shares, and a 20% price drop last year means we need to sell 20% more shares to raise the same amount of money. Which means paying 20% more in dividends year after year.
The other choice is to buy bonds, and our ability to borrow at low interest rates is based on the value of the company. Which is based on the value of the stock.
ATT puts your entire 401k match into company stock. So if the above doesn't bother you, at least look at your personal exposure.
Well, @Xd7EFsj-qau summed it up excellent and said it as simple as possible. Great post