Thailand’s media regulator has finished drafting new regulations aimed at preventing broadcasting monopolies from forming.

New rules will define any market operator with 25 percent of the audience within each market it serves as a significant market power (SMP).

The National Broadcasting and Telecommunications Commission (NBTC) will closely regulate any player who reaches this marker.

There are separate draft regulations relating to unfair competition and cross-ownership of media, reports the Bangkok Post.

The new rules have been approved in principle by NBTC, says the paper, but several points still need further investigation.

It’s unclear when the new rules will be applied.

Several of the country’s largest radio stations are subsidiaries of large media conglomerates with interests in print, TV, music labels and large-scale event management.