Traditionally, furniture makers have used different types of backs to increase the rigidity of the carcass, depending on how the carcass was constructed. If it's just an open box, for example, it'll require a more significant back compared to if it has multiple dividers spanning the interior. This excerpt[0] describes a few common types with relevant illustrations.
Ikea--and other flat pack furniture--takes this approach to an extreme. Their backs are the absolute bare minimum to keep the carcass sides square under their own weight. Apply a bit of pressure to the corner of one of their bookcases, for example, and you can easily move it out of square. Cheap knockdown joinery that's meant to be easy to assemble make the problem worse. The bookcase won't have a very long lifespan, but that's acceptable for most of their customers. They're cheap and easy to replace for a reason. Other Ikea cabinets, with internal dividers, are a bit stronger because they're no longer relying on just the back to increase rigidity.
As for homebuilding, exterior sheathing plays a critical role in racking strength, resisting wind loads, etc. by effectively tying the stud wall assembly together. But as with the Ikea bookcases, for builders looking to save every penny that can be found, there are options. Stuff like Thermo-Ply--basically, aluminum-faced cardboard--is used in lieu of plywood or OSB. It might not immediately disintegrate if it's properly covered with a quality house wrap as a water-resistant barrier, but how common is that with most production builders? And that's completely ignoring serious weather events like hurricanes, which will turn all that cardboard into mush.
You can even take it a step further and rely on metal strapping and tension ties instead of structural sheathing.[1] That kind of house should at least use panels of foam insulation on the exterior, but given that it's generally a radical cost-saving measure, you'd be lucky if you even get that. Here's a terrifying video[2] walking through a new spec home that just relies on a cheap and ineffective house wrap. The unlucky buyers are going to have lots of fun with water damage, mold, bug infestation, and more. To say nothing of the house's other problems.
Ikea--and other flat pack furniture--takes this approach to an extreme. Their backs are the absolute bare minimum to keep the carcass sides square under their own weight. Apply a bit of pressure to the corner of one of their bookcases, for example, and you can easily move it out of square. Cheap knockdown joinery that's meant to be easy to assemble make the problem worse. The bookcase won't have a very long lifespan, but that's acceptable for most of their customers. They're cheap and easy to replace for a reason. Other Ikea cabinets, with internal dividers, are a bit stronger because they're no longer relying on just the back to increase rigidity.
As for homebuilding, exterior sheathing plays a critical role in racking strength, resisting wind loads, etc. by effectively tying the stud wall assembly together. But as with the Ikea bookcases, for builders looking to save every penny that can be found, there are options. Stuff like Thermo-Ply--basically, aluminum-faced cardboard--is used in lieu of plywood or OSB. It might not immediately disintegrate if it's properly covered with a quality house wrap as a water-resistant barrier, but how common is that with most production builders? And that's completely ignoring serious weather events like hurricanes, which will turn all that cardboard into mush.
You can even take it a step further and rely on metal strapping and tension ties instead of structural sheathing.[1] That kind of house should at least use panels of foam insulation on the exterior, but given that it's generally a radical cost-saving measure, you'd be lucky if you even get that. Here's a terrifying video[2] walking through a new spec home that just relies on a cheap and ineffective house wrap. The unlucky buyers are going to have lots of fun with water damage, mold, bug infestation, and more. To say nothing of the house's other problems.
0. https://blog.lostartpress.com/2021/03/09/types-of-cabinet-ba...
1. https://www.continuousinsulation.org/sites/default/files/H30...
2. https://youtu.be/zRy1AZYrUE8?t=75