Personally, I believe that bitcoin have beaten the US dollar because it's fiat and the opposite of bitcoin. It depreciates overtime while bitcoin increases overtime due to the decentralized nature and government manipulation. I believe that if there is weakness in the US dollar, investors will pull out their funds from the US dollar and put it into bitcoin which will increase the value of bitcoin. During recession people survive and some people will also get rich during recession, so buying bitcoin will still be a norm.