Let's think a little. Do you still use your old Nokia from 1998? I guess not, although 2G is still supported by the GSM network.
If something better, faster, safer it's invented, it has the potential to replace Bitcoin.
But keep in mind that for this it also has to be at least as profitable to mine as Bitcoin is, else the miners will not change, hence the network safety (for the new coin/system) may not become safe enough.
Thank you for this reply. But the truth is that there are other Blockchain technologies that are likely to be faster than the Bitcoin technology and probably even more profitable to small investments, but unlike you say, that does not take a way the technology built by the founder of such invention as any other genius building a similar digital currency will have to tap those ideas from Satoshi's Bitcoin.
And I think that solution to such problems and issues have been created by Satoshi since you do not have to create a new technology outside of Bitcoin with the open source software that Bitcoin was built on. All you just need to do is to contribute to the already existing system through the open source and Bitcoin can be better by your contributions.