The 2-rider break are at a massive disadvantage compared to the riders in the peloton doing far less work and getting a much better draft, conserving far more e

The 2-rider break are at a massive disadvantage compared to the riders in the peloton doing far less work and getting a much better draft, conserving far more energy. Of course, at some point, some riders may choose to try to bridge the gap, which is difficult. But typically, breakaways get swallowed up by the much more efficient peloton.