Dear Adv. Minsal,
Anyone can file a PIL. It is up to the Hon. Judge to accept or reject the PIL.
The Judge may reject an PIL if he feels that it is frivolous. You might even be fined for wasting the courts time. Many PILs are filed by people who are just looking for publicity; therefore at times the petitioners are fined
Even if your PIL is genuine, the Judge will probably direct you to approach the concern department with your grievances. If your grievances are not addressed or if you are not satisfied with the response only then the court will consider your plea.
I do agree with you that trading in commodities in leading to price escalation. Only genuine importers & exporters should be allowed to hedge their commodities that too only for the exact quantity imported or exported.
Warm Regards,