Correlation will make for defensible decisions. Ones where you can look to your peers and say something like, "Look, they were browsing with Chrome. How could I know they would default their loan?" And your loan granting colleagues will all nod their heads and sympathize.
Correlation may even help one to make decisions with more predictable outcomes, even when the causative factor is unknown. While trying to anticipate the future correlates with well with being human, past performance does not guarantee future results.
Either way, I'm switching to Chrome until the data indicates otherwise.