Of course it will take time but I think it will be as altcoin as bitcoin.
There will be even more than one because the functionality of the banks will be reduced and such digital money will be valued.
Upon the introduction of altcoin in the market, there are many spectulation that there is a possibility that atlcoin might surpass bitcoin value. Their spectulation is based on the concepts altcoin is just like bitcoin (both volatile in nature and powered by blockchain technology) with additional features and lesser transaaction fees. Because of this speculations, many people compared bitcoin from altcoin. More investors also choose to invest in altcoin considering that it has a much lower price in the market compared to bitcoin.
The way how people accept altcoin as good currency as bitcoin brings impact to the cryptoworld. And as the time goes by, more people interested on altcoin. Because of this phenomenon, it is no doubt that altcoin might be as valuable as bitcoin in the future but surpassing bitcoin value is another issue. Basically, altcoin's value depend on bitcoin value. If bitcoin's price pump then altcoin's price dump also and vice versa.
At present, Considering that bitcoin's reputation in the crypto market is already established, bitcoin remain as king of cryptocurrency but nobody can predict if this phenomenon will remain in the future.