This thread is reminding me-since I've never even HEARD of the band Moxy, let alone the song in question-of how regional the music industry used to be. You didn't have corporations owning all the radio stations and demanding playlist uniformity; you had program directors and DJs who, if they found a song they liked and pushed it hard enough, turned it into a local hit. The story of how Rush took off in the US is one that happened to TONS of bands. It didn't even have to be a current song, as the example of Styx's Lady becoming a hit a few years after it came out on the strength of a DJ discovering it in Chicago. It was a time where a band could make a living selling out arenas across the Midwest but were total unknowns in New York and LA. It's like when REO Speedwagon broke big with Hi Infidelity; I remember as a kid they were headlining concerts in Charleston, West Virginia. (If my childish memory is correct, in the same month in 1978, Boston and Kansas also headlined there. GOOD GOD.)
One of the joys of 70s rock is that you can find a lot of gems out there that were only successful regionally, but were just as good, if not better, than the nationally and internationally known band.