I fully get what you mean, the thing though is that you have their DEC burn value so the only downside risk is for Splinterlands to go offline or for DEC to go even more under peg. The upside price potential is way bigger as the devs need to close the card-price-gap if they want things to work because nobody will be left willing to buy packs knowing how much the cards will get devalued. I did write a possible solution for it some weeks back Here.