Friction debt: reducing friction somewhere by taking it from the future. Freemium is a direct application of this. You get the product for free now, friction f

Friction debt: reducing friction somewhere by taking it from the future. Freemium is a direct application of this. You get the product for free now, friction free. The app creator takes on some form of cash debt for this. The friction is dripped into your experience and you need to pay to get rid of it. The debt is repaid later when you actually purchase the product at a much higher price than you would have if you just bought it at the old one time purchase rates.