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Actually, I think control over the SPS airdrop is only one thing in the equation.

  1. SPS airdrop. Not selling is good for everyone.

  2. Rentals. Everyone is renting now, so they don't sell their DEC, they just rent even more stuff.

  3. Player boom. There's a swarm of interested buyers looking for whatever DEC isn't being held, not limited to but including reasons 1 and 2.