That is right, technology will be improved continuously and human always make creation and innovation in life. Bitcoin is one of the human creation that concern on digital technology. Therefore, it is unavoidable that bitcoin can be replaced with another technology or digital currency anytime.

However, I personally believe that even though human make other innovation as Bitcoin, that will not replace bitcoin. Now we can see that altcoins are created as same as bitcoin, but there are not altcoins has same value and point as bitcoin.