The community named it to be a much better version of ETH.
ADA is slowly building its momentum to be the best digital cash available summing up the scalability, high security, low transaction fees, interoperability and especially considering the backlash of ETH with current gas fees.
Also the creator strongly believes that cryptocurrency absolutely have to communicate one with another and most likely this will happen in the next 3-5 years and there are rumors of Cardano/Litecoin connection bridge.
Can we see a market cap bigger than Ehereums? At the actual price rates this means it should be around $12 per ADA.
Will it happen?
Market capitalization can't make ethereum go down, this is not in line with what they are perfecting, it's just that ethereum is constrained by the current gas cost, which has not been maximized well.
It's true that cryptocurrencies have to communicate with each other, ADA for example, they are starting to build momentum to become the best digital money in the future, but if the communication doesn't go well, then the chances for ADA are very small, I believe 3 or 4 years they will be maximized.