Excessively long que times

I am quite certain that this is an issue all of us summoners run into time and time again. In my experience the problem has become worse! The average wait time in a que for a normal game on summoners rift is about 6 minutes for me. The estimated time is usually put at 2 minutes or so. The 6 minute wait time is not really all that bad. However, the real issue occurs when people dodge lobbies or forget to click the ready up button to be put into a lobby. We also have to consider the amount of time it takes to get a game set up after all the bans and champion lock ins which adds anywhere from 4 to 10 minutes. So when everything function smoothly, the average time of actually getting to start the game is around 13 or 15 minutes.

So, the issue is when the system does not go smoothly and you run into people forgetting to accept matches or purely declining. There is also the issue of people committing to the game and then not locking in their champion/forgetting to ban.

As a community what do you think the issue is? Are other players simply forgetting to lock in/ban? What punishment would actually curb people from queing up only to dodge?