Why are government doctors allowed to run private clinics while working in government hospitals?

I genuinely want to understand this. In many government hospitals, it feels like some doctors spend very little time examining patients and seem eager to leave for their private practice. This often results in rushed consultations, long waiting times, and poor patient care for those who rely on government hospitals.

If a doctor is employed full-time by the government, shouldn't their primary responsibility be towards patients in the government hospital? Why isn't private practice restricted or regulated more strictly?

I'm not saying all government doctors are like this—many are dedicated and hardworking. But where this happens, it seriously affects patient care.

What do you think? Is there a better solution than a complete ban on private practice?