I think so, but conservative societies naturally try to filter potential candidates. What we are seeing in the west is very unnatural. Sharing resources with complete strangers is a bad reproductive strategy, as the resources themselve are limited. Conservatives societies practice a healthy amount of nepotism and in-group preference safeguarding the wellbeing of the native-born members of the community. That way the people forming the community know they can rely on one another as they are sherring similar goals.
Take Europe for example. It's not uncommon to see European girls hanging out and dating Moroccans, Negroes and other newcommers. However, the same rapefugees who scream 'discrimination' and ''racism' will never share their own women with Europeans. They aren't as stupid and demoralised as Europeans currently are. They redistribute their own women among themselves and take foreign brides from the enemy tribes.
Human empathy is very limited and exibits strong in-group preference. It takes a lot of conditioning to break it. Killing is bad, but only if you kill members of your own tribe without a just cause. Kill your enemies and people will erect statues praising your deeds. Stealing is bad, but once again only if you steal from your own. Otherwise you're just a gallant conqueror pacifying the heathen hordes. Cuck a member of your own tribe and you're dead. Cuck an enemy and you're Chad. You got the picture
This is the law of the jungle, as old and as true as the sky, And the wolf that shall keep it may prosper, but the wolf that breaks it must die. For the strength of the pack is the wolf, and the strength of the wolf is the pack.