We see that's some of the cryptocurrencies ranking level are decreased such as dogecoin before it was ranked #4 but currently I think it doesn't listed even in top #10 ranking... So can bitcoin also decrease its rank in the future or it will remain #1 rank forever?.
Nothing will remain forever mate even Life has an expiration so what more for cryptocurrency?yeah this will stay longer in rank 1 (since it is for more than 10 years now) but in future?for sure there will be New currency that will be more functional to others and will gather more popularity and support from the community.
i am not saying that Bitcoin will be Gone but will only decrease its popularity and may down to below rank 10?who knows right?