I was thinking less of a Smash Hit on the order of Phantom than a decently running production that likely recouped its initial investment.
The original ran 702 performances, the Lansbury revival 120 performances (though I know it toured signifigantly), the Daly revival 476 performances, and the most recent at 451.
The original likely recouped (I'd have to check Burns Mantle, if I can find one that far back), but the Lansbury revival couldn't have, unless it was a limited run situation with special financing. The Daly/Lavin production may have - finances weren't yet what they are today.
It's a shame a show can run a year or more and still be a financial failure.
"Love Life. Live." Michael Bennett