Re: If they are breaking the Law
The 'Abuse of market dominance' is a simpler hook to hang the investigation on. Once you start unwrapping the FUD you may find the activity is in breach of laws or you may find that it just keeps within the lines. If you do it the other way round then as soon as you see the law isn't being broken the investigation stops.
Bit like the TV Referee/Umpire....it is all down to how you ask the question as to how much they check