Thank you guys for all the replies 
So, I assume that long-term investing in ETH and all those ETH tokens are kinda risky, isn't it?
Why there is still more and more coins based on ETH when they all can be shut down so easily?
I can say "yes", invest a token from ETH have risk and not better than invest to ETH if you not have knowledge about ICOs and patience for waiting project ICO successfully, example STRAT need one years for prove is an altcoin strong and very potential !So, I assume that long-term investing in ETH and all those ETH tokens are kinda risky, isn't it?
Why there is still more and more coins based on ETH when they all can be shut down so easily?