It is, or isn't solved depending on how the problem is stated.
The problem of food policing is solved, not the problem of food needing to be policed. In reality, places are constantly shut down for violations. The deterrent only deters people serving food unsafely, it doesn't kill the motivation - people motivated to serve unsafe food still exist, they just choose not to (or are prevented from doing so).
When police arrest a criminal, we say they did their job - we don't say they failed their job b/c the criminal existed in the first place. Sure, good policing deters criminality, but it's not really the only goal. the true eradication of motivation to commit crime are usually totally different social factor that has nothing to do with the police. In a similar vein, it's not really the fire departments job to prevent fires.
The real question is: is bias the same kind of thing. On that basis I'd ask "what kind of bias" - that is, does D&I coverany kind of human bias, or is it more specific. If you are talking about historical generation biases, for example, that might vary based on societal attitudes in general.