Kidnapping is caused by a lenient societies that have become, (through general religious, and cultural degeneration over time,) overly permissive. Especially those societies that have become over time increasingly tolerant of crime and criminals, and incredibly tolerant of aiding and abetting crime and criminals by, seemingly, law-abiding people and organizations.It is a simple fact that criminals can’t function in any society that is not tolerant of them and their crimes. Various elements in dysfunctional societies often attempt to achieve their supposedly lawful goals by aiding and abetting criminal elements.
For example, the private sector, feeling threatened by socialist elements, will sometimes turn to the criminal class for protection. Well known is the practice of companies, who feeling their existence is on the line, turning to criminal elements to counter proto criminal unions bent on extorting and putting them out of business.
Other groups may pursue activities that effectively subsidize and even legitimizes crime and criminals. Employers seeking low cost labor may support illegal immigration and frustrate any attempts to enforce immigration laws, and corrupt political parties seeking to add to their votes may look to illegal immigration to strengthen their voting base. Even religious organizations are not above illegal activities that add to their membership.
Leftists in general commonly see criminals as a natural source of support and will shamelessly advocate on their behalf in disregard of the safety of the community.
On the specific matter of the crime of kidnapping, punishments must include the same punishment for those who pay ransoms as for those who demand them. Any person, pursuing their selfish interests, who pays anything to kidnappers or even negotiates with them, endangers everyone else by their anti-social actions. Therefore, the punishment for kidnapping should be death, and the same sentence should apply to anyone who pays anything of value, or otherwise aids the kidnappers.
This will put an immediate end to all kidnappings. Nothing else will.