Almost every public company has a forced buy-out clause in their stock's trading and ownership rules. That is, if someone ends up owning $VAST_MAJORITY of a com

Almost every public company has a forced buy-out clause in their stock's trading and ownership rules. That is, if someone ends up owning $VAST_MAJORITY of a company's stock, they can then forcibly purchase the small fractions off at an acceptable going-private premium. I think the threshold for forced buy-out tends to be >90%.