Editions: TCGs (sort of)

No trading card games I've played actually had "editions" per se. What usually happens is that new sets of cards are released periodically until the game is either canceled or the company goes under. For games like Magic: the Gathering, that can be a very long time, during which many, many cards have been released and gone out of print.

This is good. It lends a lot of variety to the game. Unfortunately, what eventually happens is that you have so many cards floating around with wildly different effects that it becomes next to impossible to balance the game. When a game becomes unbalanced, people stop playing.

Additionally, if you've been playing a long lived TCG for a large fraction of its life, you're going to have a lot of cards. Eventually, you're going to have all the cards you need. Even though the company still makes new cards, you stop buying them because you don't feel like you need them.

TCG companies have to address these problems somehow, or they'll go out of business.
This is why cards become tournament illegal after a certain amount of time. The companies have to balance the games somehow, and they also need the players to buy more cards. As an added bonus, it also means that younger players aren't constantly having to deal with old, obscure cards from the 1993 whenever they sit down to play with an older gamer.