Bitcoin will never be replaces by another cryptocurrency because that network will never compare to Bitcoin's network. It is so strong after all these years and will only continue to do so.
The statement is very wrong ,as i feel btcoin can be replaced by one coin that is called dash.
See i n day to day use bitcoin doesnot have the usability as compared to dash.the one reason behind this is the speed of transaction.
when we see day to day useage we cannot order a coffee and wait for like 30 munites for the transaction been confirmed.
Yes as a investment prospective bitcoin is good.
but if yo say usage dash is better.