Though a decrease is possible but $3000 seems way below the possible lowest limit for bitcoin. I believe bitcoin would never go below $5k for this century. Different might be the case after that. And it's higlhy likely for bitcoin to maintain a price between $10k-15k.
this is a reasonable forecast . Tim Draper once said that bitcoin will reach 250000 dollars by 2022 . if it falls to three thousand dollars . i will buy it use all my funds