I wonder when will someone finally challenge CMAS legally. Maybe AIDA could do it, asking for huge compensations. Such bullying behavior would not be tolerated in any other normal business. Try imaging Microsoft (one of the best known bullies), telling you that if you want to use Windows, you must not install any other software than from MS. Well, they already tried similar tactics, and still try new ways to do so, but they were also many times ordered by courts to lift such policies, and were quite harshly penalized for them.
Some may tell that the best way is ignoring CMAS and boycotting their competitions - that they will realize soon themselves that they are shooting them into the foot. I heard such opinions on other forums. Well, that may be possible in countries where CMAS has no importance, no influence, and no power, but in Italy, or even France (although the French federation FFESSM which is a branch of CMAS, is much more tolerable toward AIDA), and in other countries controlled by CMAS, by boycotting them, you can get into real troubles - since they control spearfishing, instructor, and also scuba licensing, they are in position to drive you out into the illegal side, where you'll be forced to dive or hunt illegally, and won't be able to make any commercial activities related to diving.
That's a clear abuse of their power and monopoly position, and not only something that we should boycott - we should fight against it actively, and cause them a huge financial loss at a court to make them rethink it the next time, before they introduce another such bullying policy (this is not the first and only time I hear about bullying from the side of CMAS).
If AIDA brought a legal suit against them, I am pretty sure they would win the process without big troubles and could gain nice compensations. I highly recommend that the officials consult a lawyer about that matter - I believe that most lawyers will be quite excited to jump on it. If not AIDA, then even individual freedivers could launch a class suit against CMAS - finally by being forced to chose between AIDA or CMAS, they may lose the possibility of better exposure and loss of eventual sponsoring contracts, so suing for financial compensations is rightly in place.