I don't think that Altcoins can usurp Bitcoin's throne of glass. Bitcoin is the long live king and the leader of cryptocurrency, this will not change in the future, Bitcoin still has development team to develop it.
Bitcoins team is very strong and it improves Bitcoin every day. I agree with your opinion, but I also think that Bitcoin will not be a leader in 10 years
And how does it improve, tell me, please? He, as was the usual unnecessary Bitcoin, remained. Tell me what he can give our world, for what it would be important, there is no such thing. The anonymity of transactions? Duck in it there is no such, so all this is garbage. Ethereum is much better and more important than him and on its platform really develop innovative solutions in the field of information technology. So there may be a new king!