They are, but I think it's interesting what's happening outside Google's reach. It's become increasingly cheap for companies to store information about each cus

They are, but I think it's interesting what's happening outside Google's reach. It's become increasingly cheap for companies to store information about each customer, which drives customization throughout that company's product offering. There's a library built on ES that I have been watching on Github which promotes results based on ecommerce conversion data: https://github.com/ankane/searchkick https://github.com/ankane/searchkick