The cheapest accommodation will usually not be listed on AirBnB or Booking, because of severe short-comings meaning the platform won't do business with them for

The cheapest accommodation will usually not be listed on AirBnB or Booking, because of severe short-comings meaning the platform won't do business with them for any price. As for Uber, I guess you're right in many regions. But there's a plethora of Uber competitors around the world, offering a worse experience for a cheaper price. In 100% of cases, the cheapest product you can find will be of significantly worse quality than the second cheapest product, without bringing much savings. The rest is edge cases. As you pointed out, I'm talking about reasonably mature markets.