Abuse of the legal process by lawyers is the same in many cases that are not patent related. Any time a lawyer and its made dummy client occupy same address this is a red flag. Legal Reform.
The real issue is not the similar domain name but if your use dilutes the value of their name. If a person thinks you are associated with Instagram and especially if you are in the same type of business. As an example Ritz
Hotels does not dilute the value of Ritz Crackers. They are clearly in distinct different businesses and one does not dilute the value of the other.
Bitcoin is a money trading game in the guise of a new type of currency. Most of Bitcoin is being hoarded by traders and speculators who think they actually own something. Bitcoins could never effectively serve as an currency as there will never be stable liquid.