Apologies to be blunt, but I believe the answer falls something along the lines of: "None of your business".
When it's your money, you can wonder about what to do with it. If it's not yours, then what the owner is or isn't doing with it is of no concern to you.
I disagree as anyone owning BTC has a vested interest in those coins.
One) they could be consider abandoned and confiscated.
Two) If we wake up tomorrow and 1,000,00 are liquidated over night btc would crash like mad.
Three) everyone needs to realize the power those 1,000,000 plus coins 50 in 20,000 blocks or so wield over btc in general.