The courts support this industry by making bail mandatory for almost everyone. Bail is supposed to protect the public from a potentially dangerous person or provide incentive to those those who may flee or not show up for their court appearance. These people have not been convicted, only accused. They are innocent until proven otherwise in court.
It costs taxpayers a lot of money to house, feed, and provide medical care for people who cannot afford bail. It does not provide any further protection from people who are charged for non-violent crimes.
It can cause their families to lose their main wage earner and need public assistance, more money for the taxpayer. Children may be moved into state care if the person is their only caregiver.