I heard there a some ICO projects created to replace blockchain. Like IOTA, and many more. They promote a more secure and faster system. So this means this is a threat to Bitcoin and to other altcoins someday.
In my opinion we should consider investing into it. This might be our chance to become an instant whale someday.
Question is how do you know for sure it's more secure or faster? You can read the whitepaper and do the research, but at some point you will just have to bite the bullet and trust that a blockchain project is doing what they are promising.
And with some projects is more than just changing up the username and password. I was looking at this one the other day
https://projectpai.com/ and they are talking about using your voice and image to create an avatar. So that is a lot of personal data you could be potentially have floating around on the blockchain.