In stages like this that's largely been a by-product of us actually having a maillot vert battle, though. In most of the flat stages (not stage 7 obviously), though, it's been a trend since Bob Stapleton's train of hate with HTC-Columbia in 2009-10 that the break only gets 2-3 minutes rather than 10... it is infecting other races, but the Tour does have the highest incidences of such stages where a break that would have little chance regardless is held very close throughout, because the exposure that comes with the Tour is so high and so the sprinters' teams do not want to risk letting slip one of their opportunities for a stage win.
Like the problem with the timid racing and attitudes like Kuss', however, we do have a problem of a whole generation of cyclists who've never known it any other way, so the doomed break of the day is less appealing when it is controlled so tightly they can't even dare to dream.