It would be better because it would create a more diverse work space where multiple employers complete for employees, instead of one company playing musical chairs with people

Having fewer jobs available would result in more employers? I'm not sure how.

A few companies get almost all investments. They start a lot of projects fast and close the ones that don’t work

If companies stuck to fewer projects, money would be invested in other companies focusing on specific products, you get a lot of companies and not the market concentration you got today (which is responsible according to few economists to a lot of the us labor market dysfunctions it is currently experiencing)