I've worked in restaurants. They're disgusting. If health inspectors could be flies on the wall, they'd give every restaurant an "F".
What would happen when buying food from people who have zero regulation and are competing with each other to save on costs?
When you increase competition, you create a race to the bottom. Price has to decrease or people go out of business, and they will end up cutting corners.
By contrast, Uber is self-regulated. They have a lot of ways to keep drivers accountable (GPS, for example).
With Airbnb, you might be put in a shitty place, but it's not going to make you sick if someone skimps on the quality.
Food is totally different. Not only are you begging regulators to crack down on you and force your vendors to get food licenses, you're definitely putting customers at risk.
Are you going to monitor the conditions of the home kitchens? Are you going to make sure there aren't any rats, or that food doesn't sit out in the "danger zone" of temperatures, or that they throw away expired food? Or that they don't store food in boxes on the floor?
You can have ratings, but you can't always taste danger in your food. Many incidents of food poisoning happen after a perfectly enjoyable meal.
I don't know about Canada, but in the US, you'd also be the delight of any lawsuit-happy lawyer. If you're advertising these services, making the connection, and taking a cut of the proceeds, you're going to be responsible for vetting the vendors.
All of that in mind, you should already have an airtight liability-insurance policy.