Harmony didn’t shutter purely because they couldn’t license the TCK, but without a acceptable license to the TCK they can’t say they are a certified Java SE or Java EE platform. This meant they had no way to prove or verify compatibility, but they still continued to advertise themselves as an open source Java runtime environment.

Ultimately OpenJDK’s existence was what caused Harmony’s death, since the GPLv2 with Classpath Exception was a “good enough” license for the community (personal and commercial).