That's a proposal the Government of Ontario is currently entertaining. That would be my short answer.
The continued use of live bait is very important in recreational fishing in Ontario. There are regulations in place in the province of Ontario. For example, it is against the law to empty your bait bucket. In other words, it's against the law to dump anything that's left alive in your bait bucket into any water body.
In addition, we have regulations in the province of Ontario that determine which species of live bait are legal and which aren't.
Last, with organizations like OFAH, the Ontario government has developed protocols whereby those who harvest the bait and those who sell the bait are trained by law to ensure that they are not introducing invasive species to our waters through the live bait industry.