Johnny, it seems that those not included in the initial list that believe their companies are involved in this sort of practice are asked to file a complaint. Seems an uphill climb as is typical with bureaucracy but you may very well wait a bit for others to file against the Italiano.
From another article (I'm loosely translating English) they state:
"Although the recent government measure affects numerous prepaid medicine companies, benefiting a large part of the Argentine population, there are users whose companies are not included in this regulation. These users, who are outside the scope of the provision, can file a complaint with the National Commission for the Defense of Competition (CNDC) if they suspect anti-competitive conduct on the part of their health providers."
To make the complaint it is necessary to submit a document with the following information:
Your name and address.
The name of the person who you consider has committed an infringement of the Competition Law.
The object of the complaint, saying it exactly.
The facts considered, explained clearly.
The right on which you base the complaint, succinctly stated;
The offer of the means of proof that you consider conducive to the analysis of the complaint.
All pages, both those of the complaint and those of the attached documentation, must be signed by the person presenting it. Once presented, the National Commission for the Defense of Competition will summon the presenter to ratify it and the corresponding minutes will be drawn up.
How to do it:
Enter the 'Tramites A Distancia' (TAD) platform with your CUIT and level 2 tax code. In the case of a human person, enter using the DNI or CUIT corresponding to the person who will make the report. In the case of a legal entity, enter with the cuit of the complaining legal entity.
Start the process by entering “Presentation for Alleged Anticompetitive Conduct” and validate your data.
Complete the corresponding form.
Attach the corresponding documentation. In some cases it is mandatory.
Select "Confirm procedure".
Once the file is confirmed, in the “My procedures” tab you will be able to verify its creation and track the procedure.