It's kind of like watching impounded classic Ferraris being crushed.
To me it's because they're really nice keyboards that are highly sought after by those who know exactly what they are being destroyed by someone who doesn't care, despite being informed of their value, in a position of control. Being in a bank they should at least have considered the possible financial value, which most likely would have been enough to make it worth the minimal effort required to save them and sell them off. Laziness won the day and ruined ours.