Yep that was one their problems. Bought an used Sony Ericsson P800 running UIQ and used it for years because it had ten times more ram than new Nokia Symbian phones in 2005-2007. Something like 10 MB vs 128. Of course the UIQ system was iPhone of the early 2000s but quite few noticed it and in Finland everybody were chanting Nokia Nokia Nokia.

EDIT: Forgot to say that few earlier Nokia models had accelerated GPU but the OS and the developers didn't use those, so they just stopped adding the GPUs later on ;D