What will change the world the most?

Easy answer

Dying senior citizens

They contain much of the driving force of the status quo

As they die other models will naturally be given more free freedom to grow

It seems that this process has already began to grow

We are living in a time of greater scarcity so models that depend on financial growth and big economies logically can't continue

You can only hold not past models in most areas of life for so long

Happiness and love can not be rubbed out as words when money is disappearing.