I had heavily pondered investing in Nvidia in 2014 when I thought deep learning was really becoming interesting (90+% of my other investments are in index funds

I had heavily pondered investing in Nvidia in 2014 when I thought deep learning was really becoming interesting (90+% of my other investments are in index funds) in some sense, I had some expert knowledge of the field. However, I thought that margins would compress because AMD, Intel, and perhaps other firms would get involved... Boy was I wrong.