The purpose of mindfulness in practice is focus. Without the practice of mindfulness, distractions rule the human experience. Distractions bleed concentration away. Goals are not achieved. Evolution is sabotaged.
The purpose of materialism and capitalism is the distraction of the consumer's mind at all times. Fools give themselves over to this distraction without resistance. And fools and their money are soon parted by those distractions. Without a stable income and resources, one cannot pursue personal evolution effectively. Fools become slaves of the corporations which distract them into buying their unnecessary goods and services.
At the top of the financial pyramid of capitalism, wealthy shareholders live off the distraction of those who occupy the wide base of the pyramid. The poor buy the baseball tickets, cars, clothes, vacations, toys, prepared meals which fund the lives at the top of the pyramid. Those in the high financial brackets lavish themselves with luxury to no purpose or benefit other than comfort. The rare wealthy person uses his wealth to seek personal evolution.
Being a fool or being a person of self-evolving practice is an ongoing choice in the capitalist world. This is a key choice point each moment of each day.