Because capitalism.
The less glib answer, though a bit of an over simplification, is that the current trend of neoliberalism discourages self limitation and collective collaboration. If regulation is not put in place and enforced by forces (government, social contract, etc) then people are incentivize to push and make use of any advantage available. Not doing it risks being displaced by those who do. Competition becomes toxic and self perpetuating
Do you think the West is that far off?