Just because it was free upgrade, it does not mean, that it was OS for free.
You needed a licensed Windows 7 or 8 in order to upgrade; that one costs money too. You weren't able to get entirely free upgrade. It was more of exchange.
You needed a licensed Windows 7 or 8 in order to upgrade; that one costs money too. You weren't able to get entirely free upgrade. It was more of exchange.