Apparently you didn't even read my last post about Nvidiagate and Radeongate.
Cheers
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Nobody can guarantee a 0% failure rate of extremely complex electronic components. The cost of doing that would be prohibitive which is why we have warranties to cover the small percentages of failure rates.
Apart from failure rates of electronic components, design defects occur because somebody made a mistake. Again no company can guarantee that none of their employees (or their providers) will ever make a mistake. Can you guarantee that you will never make a mistake?
Some tools manufacturers have lifetime warranties, for example the famous
Morakniv company, but if you think a complex electronic product such as a computer can be compared to a screwdriver or a knife you are quite naive.
It sucks that an expensive product fails before its expected end of life, trust me I've been there, but it happens and it will keep on happening
forever. Manufacturing and design defects will surface during the first years of the product which is why there are extended warranties.