Your post makes no sense. Basically because something happened 15 years ago means it can not be repeated? For reference Mclaren recalled latest models 2017-2020 for the possibility of a fire risk in all of them because there was a case that proved it could affect all cars. This is a car company that was founded in 1985, the models in question are $300.000-$1.000.000 . Boeing had decades of success and then they had a dud with 737 MAX. And they have been in the business and thriving since 1916. Just because X1X is well built, doesnt mean the new internals and box shape or fans will work exactly the same. Therefore always a chance that it can go wrong no matter how much RnD or money they throw at it even in 2020.
Also lets be honest here, that 1 bil warranty loss, they did that so that millions of people wouldnt sue them and get hundreds of billions out of MS because they admited that most consoles were knowingly affected. It was them eating a humble pie to stay in the business mand not become the most hated gaming console. They have money, they took one for the team. Not because they are your friendly neighborhood shop but because they didn't want to deal with a way worse outcome that would cripple them for years to come. Also as much cash as they have, if you think that they gave away that 1bil like it was nothing, think again. Tons of people got fired, things got restructured. 1 BILLION is a lot of money for any company.