Mine… My Xbox 360 slim only costed 129 euro back in 2012 and to this day still work like brand new, you would think that the disc drive would stop working but no. Never had the need of open it or clean it’s insides. Still great, I just don’t use it anymore since I feel it’s outdated and loading speeds are better nowadays.
30%? You’re overestimating the lifetime of modern appliances.
The refrigerator my grandfather bought in the 1940s has outlived 7 others purchased later, and the old man himself. It’s still chugging along in the basement of their house, 80-some years after it was built.