Well to push the point a little - Imagine that Microsofts anti-trust case was in 2008, not 1997 and the iPhone was out and clearly gaining traction. Suddenly Microsoft doesn't look like some perpetual juggernaut. That's where we are with Google today - we can see the product that's likely to displace it. Windows is still big today, but it's not anywhere near the strategic force it was in the early 2000s. In the same way, I don't think Google is likely to be in the same place in a few years time.
I kind of am asking to have it both ways - they should be able to move against these companies earlier by levying smaller sanctions. That way they don't need 1 big killer case to get a judge to order the entire company broken up or spun off.