I was about to answer but I first read the previous answers. There is one thing I can conclude: the STEEM blockchain will be around for all eternity. I've never read so much sensible answers on the STEEM blockchain in a 24 hour period. Long to read but definitely helpful for those in need of answers. 

I praise the creator(s) of Musing of using the STEEM blockchain the way it should.

Now, to answer your question I'm going to ask a question: "What would happen if Cannabis would be made legal all over the world at once?"