If people believed that this is the end of PoW the prices of GPUs would already be going down, because people would know that they have at most 7 months of run

If people believed that this is the end of PoW the prices of GPUs would already be going down, because people would know that they have at most 7 months of run (until end of Q2) and that they'd be massive selling of graphic cards. I don't see it happening which means that either: * miners don't believe the switch is happening that soon * miners know they'll keep PoW with some other blockchain * miners are gambling hoping that they'll still make profit Maybe all 3?