Those were priced higher and comparable to the compacts like the Corolla, Civic, and Sentra.
I think there just wasn’t enough demand since people would rather pay a little more to get a little more car than they need for those rare times when a lot of cargo space was needed. Additionally, tiny CUVs like the RAV4 have increased in popularity quite a bit and still get great fuel economy, further reducing demand for the sub-compacts. These cars were also marketed toward young people like college students who have a harder time affording a new car these days and would rather buy a good used one for much cheaper.