The UK privatized applications for student visa renewals. Naturally the company gouges the students, using a dark pattern in which there are supposed to be gratis appointments but in practice they are not available.

This particular work has a peak season in September. In a government office, the staff would focus on this during the peak season, then most would shift to other tasks for the rest or the year. A private business may not have an opportunity to do that. Its staff is less stable than civil servants, and its other contracts come and go.

This adds to the other reasons that government services should never be privatized. Occasionally some government service can simply be eliminated.