summoners think that summoners rift is about teamfighting

I don't like playing a 70 minute game, in the middle of the game my team is up 20 champion kills at the end we are even or the enemy team has more than us and we lose the game because neither team wants to take the objectives to win the game. There should be some kind of penalty for teams not taking objectives within a certain about of time such as a stalemate or some kind of decision for who should be the winner based on the teams progress of objectives and champions kills. Or the penalty can be for gold. Perhaps each team that does not take a turret or inhibitor every 5 minutes will lose 500 gold. If they don't have enough gold will be forced to sell an item to pay the penalty. Riot should make a game map without objectives, just for team fighting, whoever gets the most kills in 70 minutes wins.