only those people have lost large sums of money who have sold during this bearish market. Moreover, as long as the coins have some value in the market, spammers will be there for sure.

P.S. Dominance of BTC is just due to the fact that altcoins are more volatile in nature and tend to fall or rise more during bearish or bullish market respectively when compared to BTC. Its just a matter of time when BTC dominance will fall again. Every coin has its day. sometimes BTC is in power and sometimes altcoins