Right off the bat... a definition behind "customer churn" is in order. Buying cycles are different for industries.  Ice Cream versus HVAC versus Arborists... very different worlds. In many cases, we (marketers and advertisers) are finding pressure from non-sales departments about metrics without a basis in reality. So, the question about customer churn is wide-ranging. If your issue is customer retention when comparing your numbers within your industry and within your geography... look to two places: one-on-one customer interactions and the quality of your product.

If you've got a crappy product or crappy interaction.. you know what to do.

If someone in analytics is looking at customer churn without looking at a normalized buying cycle within your geography... then you've got a different issue at hand.