"Ego-identification with things creates attachment to things, obsession with things, which in turn creates our consumer society and economic structures where the only measure of progress is always more. The unchecked striving for more, for endless growth, is a dysfunction and a disease. It is the same dysfunction the cancerous cell manifests, whose only goal is to multiply itself, unaware that it is bringing about its own destruction by destroying the organism of which it is a part. [...]
The physical needs for food, water, shelter, clothing, and basic comforts could be easily met for all humans on the planet, were it not for the imbalance of resources created by the insane and rapacious need for more, the greed of the ego. It finds collective expression in the economic structures of this world, such as the huge corporations, which are egoic entities that compete with each other for more. Their only blind aim is profit. They pursue that aim with absolute ruthlessness. Nature, animals, people, even their own employees, are no more than digits on a balance sheet, lifeless objects to be used, then discarded."
Eckhart Tolle, A New Earth - Awakening to your life's purpose, chapter "Ego: the current state of humanity".