Eth PoW isn't going anywhere, if the rumours are true giant company like bitmain won't build ASIC miners anymore and now we have new E9 ETH ASIC miner that's more futuristic, why eip1559 if this is true? Think deeply about it
You need to realise that in the past Bitmain built these miners, mined with them for months and then when the profits were decreasing they finally decided to go public and sell the miners.
This is what happened with the E3 that bitmain released, the very first ETH ASIC. They pretty much released it after the peak. How long did they mine with them prior? Probably for months. And this explains why in late 2017 we had a huge difficulty jump that nobody could explain.
So just because they are building ASICs for it doesn't mean that it has to be always profitable.