As
@ssun30 points out, we've already seen this happen with electronics. If we're being honest, this is also what happened to Lexus from pretty much 2004 until probably 2015/2016. Now we're at the point where we all have to hope they can play catch up. LS without a V8 is one such glaring mistake.
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Not trying to be a fatalist here, but Lexus is facing an uphill battle over the next ~5 years because essentially, everything they do or touch needs to be revolutionary to be competitive. A simple evolution - Lexus' signature recipe - won't really work anymore. Every product needs an "LS in '89" level of thinking and execution to be done right. Can they do that?
Well, that is maybe your opinion based on your own personal requirements. However Lexus sold 394,000 vehicles in 2004 and 677,615 in 2016, all while bringing their vehicle average $ numbers up, without crazy incentives that competition resorts to.
Surely only requirement for success is not if there is a twin-turbo V8 or not?
Also, why is Lexus in dire straits? Their sales are about the same this year, with all of their models late in model bicycle (between 3 and 6 years).
Lexus is never going to be at start of 1989 again. You will never get pricing like Hyundai with Lexus. If the only requirement is pricing, Lexus should not serve "your" needs. If we look at Lexus ES and Genesis G80, their average transaction price is the same (with G80 having 6k-8k discounts) and Lexus ES sells 3x the numbers.
Again, recipe for success cant be bi-turbo V8. It isnt for sure because Lexus is very successful and it is making Toyota most profitable manufacturer in the world.
As to the Sony, Toshiba, Panasonic and death of japanese electronics industry, if thats going to happen to TMC, it will happen after GM, Ford, Hyundai, Fiat, VW, BMW and MB die first. It is most successful and most profitable manufacturer in the world.
On the other hand, Hyundai sales are down 10% worldwide, this is on catastrophic level and while industry is growing, and you can guaranteed change of leadership and strategy if this does not change in 2018.