Possible, yes, but it requires some work for it to get there.

I've not seen one attempt reach the finish line yet, but MMORPGs are big projects, however, some have had a decent crack at it and got the components down for building one.
If you wish to pursue it, then excellent, but generally if you're new to making video games, I think it's best to start off small, I think one of my regrets was entering in wanting to create something epic, yet not having ever written a game before. Of course, there's nothing wrong with you starting small with some of the gameplay elements you want to try and build on top by making your projects more complicated each time.