Free trials, freemium, and plain old free are fairly common models that boil down to paying to acquire users. Two of them move toward paying to retain them. Free as in Google is clearly an example of a business constantly spending money for retention.
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Free trials, freemium, and plain old free are fairly common models that boil down to paying to acquire users. Two of them move toward paying to retain them. Free as in Google is clearly an example of a business constantly spending money for retention.