It might be the end of bitcoin, but not the end of cryptocurrencies. We need some kind of ICO regulation to fund and support interesting block chain projects, keeping healthy block chain ecosystem running. Than at some point bitcoin will just disappear (unless of course it will start to modernize itself, e.g. project "Dandelion").  Otherwise at some point Bitcoin will have nothing to offer to modern techno world and society, and its place will be taken by someone else.