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 Still great, I just don’t use it anymore since I feel it’s outdated and loading speeds are better nowadays.
So you had production quality issues, that doesn’t mean that modern frisges dont last, not to mention that this is just a personal bad experience. Every frisge I’ve bought lasted for decades, the last one going 5 years and strong.
If I’d have to venture a guess, is say that most.modern fridges will last about 10-20 years easily. Few moving parts, so makes sense