If the motivation for competition is success*, then that trend for success will become trendy.
If the motivation for cooperation is success*, then that trend for success will become trendy.
Extreme ends of the same continuum of human condition. So, when we (try to) meet at the middle, a balance of competition and cooperation, it doesn't matter about trends (direction). The seesaw lays horizontally straight.
*Question: what is success?
Answer, in our global economy: $ (a game of Monopoly)
It's obvious then in which way the seesaw will t(r)end to tip.