I don't know when, but one day bitcoin is not going to increase in value like it does today.
One day bitcoin will be something people buy because of convenience. We already see this on the crypto exchange. Bitcoin is King, and 90% of the cryptocurrencies follow Bitcoin's pattern.
Once bitcoin becomes the accepted currency of the free world, the value will change very little. There will eventually be a shakeout of all the other cryptocurrencies, because we will not need hundreds of them. Of course I could see cryptocurrency sort of replacing stocks in a way. So even though they would not be necessarily accepted as an actual currency, they could still be traded like stocks on an exchange.
Just my opinion.
interesting opinion! if you have a moment, check out a blog I just made "the death of crypto currency" I think you will enjoy it.