How could Cardano replace Bitcoin when in fact it's having a hard time to stay in Top 10 altcoins. In terms of price, Cardano will have a difficult time to reach $1. The good thing about Cardano is the team and the series of updates listed on their roadmap. The team is always on the updates.
But Cardano will not be able to reach the same heights as Bitcoin, even in 10 years, because this project is not so strong, but it is certainly promising and has the right to gain a foothold in the TOP-10.