I think it might be a mistake to frame the issue as scientists not doing enough groundbreaking research. Those scientists do exist in greater numbers than befor

I think it might be a mistake to frame the issue as scientists not doing enough groundbreaking research. Those scientists do exist in greater numbers than before and have the right incentives guiding them. What is happening instead is that the superfluous group is expanding at an ever greater rate. These are two parallel worlds being discussed as if they were one. To answer your question, I believe we need to look outside of academia to relieve the pressures on most people so that fewer are tempted to add to the science glut. I'd venture to mention UBI but that's a whole can of worms