How much better would software be if a team of five individuals could produce the same output as a team of 500 individuals? How much terrible software is out t

How much better would software be if a team of five individuals could produce the same output as a team of 500 individuals? How much terrible software is out there? How much terrible FOSS software is out there? How much amazing and humanistic software could be created if the costs for production were drastically reduced and the demands of the market were less of a factor?