They get voting power and upside.
They do not automatically inherit the company’s debts or become legally obligated to bail it out.
If I own 50% of a corporation and it fails, my equity can go to zero. That is the risk of owning shares. It does not mean I personally owe the company’s creditors money, and it does not mean I am required to rescue the company with more cash.
Stay in school, please. Still not convinced you've read the article at all.