Adam Osborne was the entrepreneur who pioneered portable computer. He had a luggable CPM machine before anybody in 1981. It was selling like hot cakes, almost 10,000 units a month.
Adam bragged to the press about his new upcoming machine that would be out in few months which would be much better in every respect. His sales dropped to zero overnight, customers put off buying till the new machine was out.
Osborne went bankrupt with massive unsold inventory. New machine was not ready for shipment. This made room for Compaq to put out its DOS machine that looked almost like Osborne CPM machine.