Well, I think what's preventing that is precisely the reason you see teams start employing time wasting tactics ridiculously early - said teams usually seem to be the ones who aren't capable of passing it around the back.
I don't love the idea, but I don't hate it, either. I get so tired of watching my clubs control the run of play and get nothing added on at the end of games when the other team has been up to time wasting since the 20th minute.
I generally dislike arbitrariness, and this removes a huge variable that is arbitrarily decided.
I do think sundance makes a valid point, though. And that makes me nervous about it.
In a broad sense, though, I think we all just have to accept that the game will always evolve. Think about how dreadful matches were when keepers could handle backpasses. That was horrid to watch.
i get it but the back pass didnt change the time from 45 to 30 mins per half or clock stopping etc. i do think its going to evolve ( way back when offside rule was changed, extra sub in extra time, VAR, goal line technology) though basic set rules still pretty much intact. Its just the whole changing time really gets to me....and as you said it opens doorway for ads commercial breaks, even VAR can lead to that right now.
i always thought that a team that is good enough has to be able to retain possession or be able to break down a bunker ( at least train for it) in order to create chances or score.