[aristoxenus]

I'm not comparing The Fame Monster to the Diabelli variations.

She's (very) commercially successful -- her revenues have surely long since eclipsed the entire D&B economy totalled over time.

Among commercially-successful acts, her product happens to be a lot more richly constructed than the competition. But the Mac isn't loved for it's BSD kernel -- it's the complete package. Gaga's success should be instructive to anyone hoping to make a splash in any industry.