I totally agree John that it isn't that common anymore but it occasionally still happens. I have a friend with a Kia and earlier this year 6 years into it's 7 year warranty it developed a thirst for oil. It was stripped by Kia and wear level dictated an new short motor. It had been dealer serviced all its life and had 70k on it.
I was once talking to a bloke who worked on the Vauxhall V6 engine plant at Elsemere Port and he said that there was a noticeable difference in bore size from when the cutter was new compared to when it was time to replace it. That was a lot of years ago. Crikey, I still remember doing de cokes every other year on Fiesta Mk1's.