This is pretty much the experience now. There are players who absolutely REFUSE to change up what ISN'T working. I'll see offense stand back at choke points when I, Reinhardt, shield up, am advancing on the enemy. At no point do they go "Oh shit, he's got us through the choke!" It's "Sweet they're firing at him now, let me continue to try and snipe from across the map!" I will go 5K-20D advancing on the control point, causing havoc or creating a hell of a distraction and I will die and STILL see the idiots trying to snipe across the map with Soldier or Genji. At least the Reapers try to use their shit to get in range.
My other pet peeve is Mercy's who DO NOT switch to DPS stream. If I am at full health and NOT taking damage, give me a damage boost!
My hope is that ranked play will solve a lot of this nonsense, but I doubt it.