The coupe isn't a strong seller for Acura so they dropped it. I don't think they have any intention of bringing it back.
Yup, I remember back in Acura's coupe days, mainly the true Acura coupe, the CL. They didn't sell all that well when compared to the rest of their vehicles.
The Acura RSX did sell very well though, even today they have a very strong presence on the street of any major American city. But that's because it wasn't really a true luxury coupe, more so a sporty coupe, a coupe you bought if you want to step up from a Civic coupe.
If Acura brings back the RSX, they could have a winner, no CL though, it failed and will continue to LOL.