Even in that scenario, the people making that threat are not actually in control. The ones with control are choosing to do this, rather than lose money.
These people are not forced to make more money at the expense of others. It's their choice.
If the threat is that unloading a position will cause a dip in shareholder value of $X, but those actually in control believe their own thesis and operating model is worth more than $X, then they can choose to weather the storm, believing their way will negate the loss of $X.
If they really don't have an answer to the activist investor's thesis, then yea, they'll roll over.
But it completely ignores the commercial reality: 10% of your holdings making a move is sometimes enough to swing a board decision. Look at AGL in Australia and the recent play by Grok ventures. Nothing like 50% + 1. They moved the mountain.
You are conflating control with influence. Control is the ability to make a unilateral decision, consequences be damned. Influence is the ability to impose costs and benefits on a decision maker so that they do what you want
No disagree but also.. this is nitpicking. Everyone reading the flow knows what was meant here: change was effected by a significant minority of shareholders exerting influence. You would not be wrong saying colloquially "they were made to" or "had to" even though legally no force exists. Well clearly to a nitpicker you would be wrong, but half the room is now rolling their eyes.
Yes 10% of your company being sold at once would be alarming. Thing is TCI does not have anything like that much. They have ~0.5% of the equity and less than 0.5% of the votes.
These people are not forced to make more money at the expense of others. It's their choice.