Art is, contrary to popular belief, not just anything meant to conjure up an emotional response.
Art is, well, whatever we agree it is. But not necessarily "we," because, as I just delineated above, most of us have absolutely no clue what art is; mostly it's when curators or critics and other artists who have put a lot of study into the field pass their judgment, that's when something is art.
You're never going to walk down a street, see a urinal, piss in the urinal, and realize that it's art. When you walk into a museum and see a sculpture of a urinal (because that is what Duchamp's famous work really is) then you realize it is art.
Just because you bought a packet of Wrigley's, which was intended to invoke an emotional response of brand loyalty, and were moved by the interplay of flavors, and so declare performative art, means nothing and changes nothing.
They don't display games at the Louvre, and they aren't featured in biennials. There are no critics for video games based around their artistic merits, because most often they have none. Nobody pays to make a game simply so a game can be made; they pay to make a game so they can make money off of it as a game, not as a work of art.
Is it possible to make a game that is art? Why yes. Is it possible that the majority of games will never be art? Very much so. Have there been art games? One or two. But as of this moment no, most games are not art, and we can't extend that honor to the medium as a whole as of yet.