cool article..
actually volatility in general is bad for any real world business (being everything but wall street) and this extrem volatility of cryptos is very bad..
so I believe your diversification advise is spot on...
and if you are the CEO of lets say meme-it.com you would better do this if you either generate a lot of other crypto via an ICO or your proprietary crypto goes trough the roof and you are able to sell some..
otherwise you will end up like... yes.. you know what I mean..
And if you hate fiat you still could park some of your surplus in real estate, gold or farm land.. just in case something like 2018 happens... and than tap it again...
so you don't have to lay off 75% of your staff and kill your best projects...