Yes but it will be made by a big company like Amazon or Microsoft or Facebook etc..
Companies that have large user bases could launch a game changer anytime!
I think the key will be if the new currency can be used as a store of value
So it can be handled like a stock on the NY stock exchange.
If who over rolls it out turns it's back on the crypto markets that will be bad.
And may hamper overall adoption..

@OP
Did you mean to ask if an open source Github coin will take over?
I doubt big companies like Facebook would make a digital currency open source.