If you hold with the pure capitalist notion that the owners of a factory, or other means of production have carte blanche to conduct its business as they wish, then you are correct.
If you take a more nuanced, respectful, contemplative, approach (one might even say a Christian approach) then all the stakeholders in a business (owners, managers, workers, suppliers, customers) have an interest in that business and responsibilities to each of the other stakeholder groups. In that respect workers who have contributed to an enterprise, in some case for decades, are entitled (ethically) to have their roles placed a little higher on the list of priorities than a milliion dollar bonus for the CEO and 2% dividend for shareholders.
But you are, of course, entitled to your purer capitalist approach and to lay at the former workers' door responsibility for the consequent hardship (and reaction to it).