The development of technology seems better if it lasts thousand years working like the first day, using techniques to overcome age, understanding its causes. Even if the product is cheap, with better engineering methods, it would be more durable.
PCBs include multiple parts and almost each one has a failure rate after quantities of stress or friction, temperature, shocks or similar factors. There are up to unlimited pieces working together where a single one could make the circuit completely useless.
The manufacturing process cannot be perfect, and there are other intrinsic elements like soldering that have a percentage of failure. Furthermore, the internal structure of any material comes with impurities that sometimes continue in the raw block to create the parts.
Metals experience corrosion and oxidation, two different problems but with similar results. At the board level, the solution is to use resins to cover the metals although when it comes to soldering, the metals need to be exposed to the air to start the complicated process of heat transfer, the addition of flux to avoid oxidation due to the high temperature and the chemical bond of the metals.
If the metal is exposed to air, without protection, then it's ready to suffer the consequences of it with —between others— dust, humidity and the presence of oxygen. Sadly, this is how it's done and there are multiple parts exposed.
Sometimes users not know that the solder joints are delicate and break easily, so it's senseless to believe that the device can be treated like a brick of metal. The cooper at the board is glued to the fiberglass, and the support area sometimes remains tiny. Adding the gravity of parts with considerable weight, the entire board may break as it does frequently. Always to remember that any piece of electronic equipment should be handled with extreme care avoiding impacts of any kind. Metals fracture and soldered areas are by far more fragile than others. When the device is recently manufactured, the joints are stronger but after time and exposure, they go weaker causing uncountable failures.
That's the point, the technology should be more reliable and avoid these issues. The question is, does the industry want it? The failure rate goes to the white zone after the warranty and the user must repair or also buy another. Another opportunity appears that leads to revenue, but the user loses a device and the e-waste mountain continues being bigger and bigger.
It's lamentable how people living within the environment don't understand that this behavior damages everyone but also themselves. It would be rational to observe companies promoting technology with warranty periods of 100 years, after research and development toward that purpose, with complete trust that even a group of beasts in a cavern wouldn't be capable of making it useless.
Do we hold our breath?