Because when you book a car or ask for food to be delivered of it does not happen you just cancel the transaction and book another one, perhaps on another app. There is not much risk associated to this transaction and this favour the apparition of « competitors » doing the exact same thing.
When you are renting a flat in another town, or country, sometimes weeks or months in advance, the risk is much higher. If upon arrival you discover you have been scammed it has a much higher impact than a delayed meal. This favour a single actor that you can trust (however bad is Airbnb, image what it would like if you had to trust a local actor in a country that you have never been, acting without respecting the regulations…).
This makes the dynamics of those two types of marketplace completely different.
When you are renting a flat in another town, or country, sometimes weeks or months in advance, the risk is much higher. If upon arrival you discover you have been scammed it has a much higher impact than a delayed meal. This favour a single actor that you can trust (however bad is Airbnb, image what it would like if you had to trust a local actor in a country that you have never been, acting without respecting the regulations…).
This makes the dynamics of those two types of marketplace completely different.