Short answer is return on investment. If I get $50 on a $75 investment when I used to get it on a $50 investment, my ROI goes down. My investors are now mad. Th

Short answer is return on investment. If I get $50 on a $75 investment when I used to get it on a $50 investment, my ROI goes down. My investors are now mad. They sell their stakes and buy into a company with a better ROI. My stock price goes down and now I'm mad.