Freemium isn't a business model, it is a marketing plan. In some cases giving away a subset of your product for free will cost you less per paying customer acq

Freemium isn't a business model, it is a marketing plan. In some cases giving away a subset of your product for free will cost you less per paying customer acquired than any other method of advertising / sales. If that isn't the case then you should stop giving away the service and spend that capital on the other more profitable methods of acquiring customers.