Of course Bitcoin isn't safe, you'd be crazy to liquidate your assets and dump the money into Bitcoin. Just ask yourself how you would feel if you wake up one morning only to find that your 2 mil is now worth 700k 
However if you're operating an illegal and highly profitable business then funneling your profits into Bitcoin is not such a bad idea, the government doesn't yet have the proper system in place to deal with that type of money laundering 
I can only go up at this point to be honest. Right now it's pretty crazy that we are still at 3 figures, slowly everyone is realizing how undervalued Bitcoin is, its marketcap is minuscule, something like Uber has 10 times more billions... look at the potential. However if you're operating an illegal and highly profitable business then funneling your profits into Bitcoin is not such a bad idea, the government doesn't yet have the proper system in place to deal with that type of money laundering It will take several decades for bitcoin to be popular in the world and infrastructure to be built. So Just be patient.