People really don't want to change. This requires serious willpower and determination. There are many who don't want to take responsibility. Everyone prefers the easier option.
As you said, this is unsustainable and will be a serious collapse. Even if those who are aware are prepared for this collapse, they will also be affected by it.
Money can buy a lot, but when the whole world is filled with poverty on every corner, life experience isn't that great.