No, a TV is something that loses value over time, this is a virtual good the value of which remains constant until the game goes offline. And 50% off isn’t giving them away to everyone for free, either. Companies including Blizzard have always had sales. Big difference.
Trust is very important to keep selling things to loyal customers, and I refuse to buy anything from a company which has shown a propensity to devalue that purchase by giving the product away to everyone for free sometime in the future. Can’t speak for everyone, but they’d never get another penny from me.