Is there enough competition in Australian business? And making it easier to visit relatives in prison.

A recent report by the former ACCC chair Alan Fels claims that rising prices have been caused, not just by inflation, but also by companies with too much market power using that position to increase their profits. What's led to this concentration of corporate power? And what does it mean for consumers, workers, and suppliers? And prison visits from relatives have been shown to have a positive effect on the prisoner, both in jail and upon release. What can be changed to make the visiting process less fraught?