Why should an AirBNB be cheaper? In many ways, you're getting more. More square footage, more amenities, more options. Sure, I can stick a family of 4 in a hotel room with 2 queens, but we will be way more comfortable in an AirBNB with a kitchen, living room, etc.

I totally understand why a business traveler would want consistency and simplicity. When traveling with family, I'm happy to pay more for the AirBNB experience, even if one of the adults has to sleep on a sofa bed in the living room, while the other is in a king bed with the kids. (Assuming a 1 bdrm rental. 2 bdrms is even better.)