Pretend this is true.
You owe stock in XYZ COMPANY. You've owned the stock for years, you invested a thousand or two of your graduation money when you were 18.
XYZ Company makes widgets in a plant in Iowa. They send a letter to shareholders, saying that they're considering closing the Iowa plant, and building one in China. They have empirical evidence that closing the plant will increase stock prices by 20% in the first year. (just play along, here)
The plant in Iowa employs 800 workers.
They ask you, as a shareholder to help make the decision, with your proxy vote.
Let's say your shares, whatever the $ amount may be, equals half of your savings. Whether that be $5k, $20k, or $100k - it's half your savings.
How do you vote?
Do you vote to close the Plant, have the jobs go to China, and make 20% on your money?
Or, do you vote to keep the jobs here, knowing that the share price will remain stagnat, at best?