Answer: Ostrich is underestimating the costs for which in addition to costing 98 billion per year, to collect that money they will have to collect more taxes. This will cause that when the income tax increases, the workforce produces a lower net return making the opportunity cost of leisure less and this can result in those who pay taxes to finance the program reduce their working hours reducing productivity
It is also possible that the proposed benefits have a negative effect on people by inducing them to work less to access these benefits while also reducing overall productivity.