There is no need for an expert to explain why a public tender is called. At times tenders may be restricted, pre qualified, or selected for various reasons like secrecy, confidentiality, expediency or some peculiar reasons like corruption or cronyism.
Normally a public tender is called to ensure that the buyer has the best deal in terms of quality, choice and price. This is normally achieved by having a good number and selections from tenderers with a good mix of products and pricing. The buyer would then be able to make a more informed decision on what are available in the market and the cost of the product or services.
A public tender also ensures fair play, no favouritism, under hand tactics, no fixing, no collusion or corruption. It is about being fair and transparent to the buyer and sellers.
Govt agencies, public or private companies do not established procurement procedures and tender processes for fun. No responsible management staff would simply place a public tender and accept anything that comes along, and the last thing is to accept a one bid tender. This can only happen when the value is insignificant and when there is a critical time issue at stake.
The very fact that a purchase must go through the process is already a reminder to the buyer that they cannot suka suka buy anything at any price. It is a reminder that the process is to ensure the organisation is getting a fair deal and also suppliers are given a fair chance to bid for the tender. There will always be cheats who go through the motion to give an image of transparency and fair play. There will be those who will game the system for obvious reasons as had happened, and anyone who knows the system could do it so easily. And when caught, pretend to be naive and ignorant and mouth things like the system can be improved.
Are these commonsensical objectives of a tender so complicated and difficult to understand? A moron can be expected to overlook such processes and the reasons for them because a moron is simply a moron. Can anyone be more moronic than a moron and failed to observe and practise these basic rules of procurement and purchases using public money?