If they are the only business capable why not make them bid anyway just in case?
The greater problem here is the theory of competition when it comes to government, since it is often the case that there is little or no competition, and entrenched monopoly providers of government services and services to the government (separate things).
Obvious to me that certain functions and competencies must remain inside the government and outside the profit motive. The inevitable outcome of niche provision of government services tends to be a parasitic relationship between government and corporate provider, and this ultimately costs citizens more in the long run - and not just taxes!
Surely, if anything goes wrong---it will at least be the things the government wants to go wrong.
https://investor.equifax.com/news-and-events/news/2010/10-04...