Isn't the reason their compensation package? Maybe if they had to buy certain number of stock and lock it up for some reasonable period say 10 or 20 years things would take longer term view.
You’d have to change comp across the board. No one is going to want some draconian lock-in package when the other guy across the street makes a king’s ransom in a quarter.
“Ratchet, ratchet, and bingo,” as they say.