In some ways one can understand why they are so reluctant and unsure of cannabis infused edibles. Some compositions of cannabis can produce negative side effects that might yet ti have been comprehensively studied but I don't think that is the problem here.
The true problem is the governments mania to regulate everything. Once the edibles infused with cannabis are allowed, it would shake the foundation of their death grip on the food industry.
We would have a market that would be new and thus more than a bit difficult to regulate.