This applies in any race. A strong team gets a couple of riders across to the break and they simply sit on. The peloton eventually will chase them down because the strong team are almost certain to get the win and the good sprinters don't often go in long breaks. If the break is not caught, in a stage race all the intermediate time and point bonuses are swept up and denied to opponents, and at the finish any time bonuses are used up by the break, hence the leader has an easier ride in and lets the sprint trains do their thing for minor places which have no effect overall. In a one day race it's a bit different, and anyone up the road with a minute or two in the last 30km will be chase targets for the sprinter's teams. So it changes things if one team has, say two from five, because they can sit on and deliver at the finish if the chase does not make it. End result in all cases is advantage to the smartest team, which may not necessarily be the one with the strongest legs, but the best tactical sense!