For a business to be successful employee costs need to be less...

For a business to be successful employee costs need to be less than employee returns. For a high-growth business the returns are always lagged so it's difficult to assess. For a medtech company with lots of regulations the returns are even more delayed. Therefore it makes sense to have a "margin of safety" when hiring to avoid cash flow problems and the need to raise capital unnecessarily. This is much easier to judge looking back though, if 4DX had closed major contracts we would be applauding him for having the foresight to overhire to meet the demand.