From Seth's Blog:
It's okay to treat some customers differently, but first it pays to figure out who you're dealing with and why you want to re-allocate your resources.
I'd go as far to say it's impossible to treat all customers the same even if you wanted to. Customers who contact your customer service are getting 1-on-1 service that the others aren't.
Just be honest why you're treating customers differently. Because they had a problem, because they paid us the most, or because they are the loudest are all valid responses.
Eric Davis
Retain the best customers and leave the worst for your competitors to steal
If you're having problems with customers not coming back or defecting to competitors, Repeat Customer Insights might help uncover why that's happening.
Using its analyses you can figure out how to better target the good customers and let the bad ones go elsewhere.