Will he go down with the ship? The American rapper’s music-streaming service may be sinking already. Similar to Spotify and Pandora — apart from being helmed by prominent musicians — Tidal caught a big first wave, coasting onto iPhone’s top download list. But it has since hit the doldrums, dipping far below competitors. Critics warned it was adrift when Tidal ousted its CEO, and Kanye’s assertion that it wasn’t “the Illuminati” didn’t help. But supporters hope the young company will soon find its sea legs.