After the 60-day grace period, not all laid-off H-1B workers will need to leave the U.S. if they find a valid option. Immigration lawyer Andy Semotiuk has written about 12 such options that include moving to another H-1B employer or filing an EB-5 application. Other possibilities depend on requirements such as education, professional experience, and starting a new business. And if a lead immigrant cannot apply for a visa, making the spouse the lead applicant may allow the laid-off person to apply for a work permit.
See the Forbes article