Cardano is probably going to be another shitcoin which isn't going to have any kind of real value in a few weeks time. I would have more confidence in Ripple since that is at least used for something that has support from fiat sources. Cardano looks like it's trying to be Ethereum 2.0 and I'm going to answer your question the same way that I answered everyone else when they were all asking if Ethereum was going to replace Bitcoin: No.

I'm going to go back to sleeping on ADA and looking at XRP.