I know many "small" eth miners with custum rigs they stopped mining eth in the past months because of the profitability is not there anymore

they switched either to raptoreum, chia/ chives or looking for alternative or switched to pos / masternodes coins.
Already? That's lame, right now ETH mining is still profitable, a 30MH will earn you 1.27$ today I don't see reasons to shut down your rigs right now, not until 30MH earns 0.50$ per day, raptoreum is CPU mining coin and it sucks, chia is even worst the cost of Terabyte space is too high for mining, a 100TB will earn you 3$ per day do you know how much 100TB costs?