Let's not forget that Toyota has for a long time now been dedicated to making the wold's ugliest cars. That will require a sea-change in direction, too.This difficulty of change in culture is a much, much bigger problem for Toyota than many realise.
When people are 'programmed in company culture' to look at change in a very careful way, it is practically impossible for them to take risks.
Give them the money, show them the already existing techniques that make it possible, all of that won't help much.
They will always find reasons to not do it that way.
The only thing that helps is replacing A LOT of people in key positions and even then it will be extremely difficult.
I do not envy people in Toyota who have to change the course of that huge ship.