Ruthlessly acquisitive or competitive. Describes a business or other set of circumstances where people try to succeed at the expense of other people.
An activity or situation which is congested with participants and which is hectic or tedious, especially in the context of a busy, modern urban lifestyle.
Inconsiderate or unfair competition, where the competitors are willing to do just about anything to win.
The busy, modern urban lifestyle itself, especially when seen as a competition for wealth or power.