Why don't you find out for yourself?

There's a consensus amongst fans as to what this beautiful strum of a song is about but it's a very prosaic and one dimensional reading of it in my view. This is Morrissey biting the hand that feeds, taking on the music industry. Not the specific attack of "Paint A vulgar Picture" or the direct assault mentioned in "The World is Full Of Crashing Bores" this is a more a subdued criticism. Maybe the ire is buried under the understated arrangement but it is there as Moz mentions people who wish for your misery to continue so they can benefit from the art such pain creates. They "siphon all your dough" but we'll never believe him until we ourselves enter the arena.
This accusation of us questioning his sincerity goes back to the old public persona of Morrissey at the time of the Smiths. It formed the impetus for "The Boy with the Thorn in His Side" and his belief, mentioned in that song of us an audience, doubting his genuine concerns continues here.

The song has the qualities of an anthem, but a very passive aggressive one. Its subject feels oddly insular even as he's inviting us into the music world, a place where as he sings "the sanest days are mad". I believe this is a snapshot of the way he lives now, constantly paranoid of record company executives and fearful of daggers drawn up as swiftly as contracts are.

Despite the mention of "success" and "career" I believe it is shortchanging the song to consider it as only his view on music business hoopla. This is his take on everything from, his legal trouble to the pitfalls of romance. Music may be his life but the line, "sick down to my heart, that's just the way it goes" can't just refer to backstage shenanigans. There's a deeper dissatisfaction at work here, and to be honest as much as I value relatability when discussing Morrissey I'm more than happy to remain in the dark this time.