There's peanuts, and then there's 6 grand for a steering rack on a LS460, apparently not an unusual requirement according to this thread.
http://www.lexusownersclub.co.uk/forum/topic/80623-ls460-steering-rack/?hl=%20ls460%20%20steering%20%20rack
I don't see the problem, i buy a luxury car and i expect to pay luxury money if it fails.
Break it down to cars needing repair to cars manufactured, how many fords require major repairs to the amount made, thousands i would imagine, i bet the ratio of Lexus needing major repair would be far less, the amount of money required to fix them however would be the opposite way around i fear.
Mate has a Ford Focus, 2011, less than 15k on it, condensation in both front lights, gearbox oil leak, power sags to idle, scary when doing more than 50, these are all common faults and more that ford know about. I know he will get it sorted on warranty, but that amount of common faults is unacceptable on a new car.
How many out of warranty cars suffer major faults, i would not dare guess.
My car is 10yo now and i bet it will outlast his ford.
All cars like i said have faults, luxury cars cost more to fix. Thats the down side to owning a Lexus.
If you don't see a problem, that's fine.
I'd have a massive problem spending six grand on a single repair on any car, unless it still had a value much higher, especially when you can still buy a very nice LS for a third of that.