Regarding profitability of Ravencoin once Ethereum goes POS..

I read lots of people saying coins like RVN won't be profitable because there will be a huge influx of miners from Ethereum into RVN, but wouldn't an equilibrium be reached ? It might not be profitable for some time, but it will quickly be offset by lot of miners selling their gpus and quitting mining, thereby lowering the difficulty. I mean, mining has to be profitable somewhat atleast by 0.5 dollars a day I'm guessing otherwise no one would mine the coin, no ?

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We also don't have ASICS which is a good thing.

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