I hadn't even been aware of that, so I Googled for further info and came across this article on it:
https://www.cbssports.com/soccer/new...vable-reasons/
It explains the undesirable unintended consequence of Chile's self-destructive appeal, but also mentions the following:
Funnily, there's also footage in an embedded video of the Colombian and Peruvian players during last night's match clearly encouraging one another (with their mouths concealed behind their hands) to settle for a draw, as they knew that result would guarantee they would progress to the World Cup and intercontinental play-off respectively at Chile's expense.
You can hardly blame them; both Peru and Colombia managed to get themselves into a position - on merit, over the course of the previous 17 games - where they could both settle for a draw to get where they wanted, so you can hardly hold it against them for protecting the precious advantage for which they'd already worked so hard. They'd already done the necessary work; Chile hadn't. It's Chile's fault ultimately that they allowed their fate to fall out of their own hands, so I have little sympathy for them on that front.