Most laws are created around an existing society/market-place. Since laws need to appear reasonable they normally don't ban existing services but tend to protect them through framing and licensing.
This is why disruptive players naturally break laws in highly regulated markets.
This quirk is noones fault but a natural implication of public choice. Since disruption can lead to many people being much better off, I think being unlawful alone is not a bad thing.
Laws are justified by making everyone better off. If they don't, don't follow them. This is in no way revolutionary or anything. Using the own mind to judge justice is a standard insight since enlightenment.