They're still reacting. But they've finally woken up and smelled the smoke from their burning walled gardens, and they're trying to form a bucket chain.

The trouble seems to be that 19th/early 20th century anti-trust law, from the era of the coal and steel and oil monopolies, is a really bad fit for modern service industries. Not to mention moving too slowly. And taking aim in the wrong direction. (Such as the DoJ ignoring the $48Bn goliath with 85% market share and taking aim on the half-dozen $1-4Bn corporations trying not to get squashed by AMZN by sucking up to AAPL.)