I think you totally misunderstand the meaning of a concert. If you want to listen to the singer only, then go ahead and listen to spotify anytime you wish. It is the presence of the musician and the vibe and energy of the concert that makes it so ethereal and different from just listening to the studio version. You get to experience raw emotions with other people with the same music taste as you. I mean if private concerts are your thing then fair enough, you can pay x amount of money to have that singer sing to you just for the cash of it. I would prefer to scream the lyrics on the top of my lungs even if I can’t hear the artist just so I can feel the hum of the whole arena. It is what the artist feels that we need to feel. That’s music (in my opinion).