Many of the ones I know end up at other companies that had troubles finding good employees before. And a bunch of others started their own companies, and they a

Many of the ones I know end up at other companies that had troubles finding good employees before. And a bunch of others started their own companies, and they are/will hire their own employees, too. I wonder if there are statistics about this kind of trend. How many new companies spawn for ever 100 tech layoffs? How many more jobs are created in 1, 2, 4, and 8 years after the layoffs?