You are absolutely right. The Windows and Mac GUIs have been in development, full time, for over 10 years now. This is why they are much more polished and functional than whatever we have now.
GNOME is not doing anything revolutionary GUI-wise because it is not a research project. We do not have enough resources to embark into long-term research, and current GUI paradigms are well-known and work reasonably well. We are trying to give people freedom; when we have accomplished that, we can go on to research better user interfaces.
You are absolutely right. The Windows and Mac GUIs have been in development, full time, for over 10 years now. This is why they are much more polished and functional than whatever we have now.
GNOME is not doing anything revolutionary GUI-wise because it is not a research project. We do not have enough resources to embark into long-term research, and current GUI paradigms are well-known and work reasonably well. We are trying to give people freedom; when we have accomplished that, we can go on to research better user interfaces.