It's just logistically impossible even if we get some others to help us out. With thousands of merchant ships out and about the oceans everyday and hundreds going through various choke points, it is just not possible to provide escort services for everyone out there.
However, with most of the piracy taking place in a few select places, we do have CTF's established with various countries help in an effort to fight against piracy. As a matter of fact, the Ruskies and Chinese are getting into action in the HOA. PRC actually want a seperate TF number assigned to them. Vested interest I guess taking into account all of the material good that come and go out of China.