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So, it would be the time to invest if you expect the demand to increase later. Where will this demand come from? New players? These hypothetical guys who will be asked to invest hundreds in cards and SPS, in order to start earning close to nothing?

If you think like an investor its maybe the way you see it. The demand must come from a broader adoption of online card games, a well functioning mobile version and the land update, giving the game more depth and places to discover.

To create more demand and attract new players it will take time. Nontheless, even now there are still people playing the game and building their decks.