Obviously as an investor you understand there are risks but out of all the exchanges out there, i can think of 2-3 that I would personally trust with my money and in my case we are only talking about thousands, imagine a big player with millions using etherdelta or some other retarded exchange, no way that will ever happen. Even big exchanges like bittrex, not long ago, they fucked up and made everyone wait months and months to get your account enabled or verified. Why would any big player invest in crypto when the risk is so huge, there is literally zero safety, any exchange can run away with your money and you can barely do anything.
But isn't this is the crypto where nothing is so sure and you can not make proof of stake depending upon what they say when they are developing the projects or market place itself. Its all about the uncertainty of the projects in the crypto which should be more or less depending upon which you can just make your decision whether you want to invest or not. I am the guy who always work on the principle of risk assessment and there is nothing like mature market or regulated one. Thats the personal experience talking about the whole scene here. Believe me I have tried to search investments which you are depicting here but nothing was worth spending time on to.