selling blind "loot boxes" like this is a kind of new year tradition here in japan, where retailers have been doing it for at least a century, with the oldest traceable ad dates back from the 1890s.
so it's not unusual for computer stores like yodobashi, tsukumo, pc koubou, etc. to sell "pc parts loot box" like this every new year, even waaay before this semiconductor shortage.

With the popularity of such games in Japan it can be a big success, not that I like it one bit..