Well buddy what is stopping zee from utilizing its massive bollywood library properly right now. Well all i can say is that zee can perform quite well if it starts giving various different bollywood films space on its channels which is not happening till now. Though i have shared such detailed feedback on content strategy, audio quality, channel revamp/rebrand and various other things with their hindi movie cluster head and i do hope these changes r implemented soon.
By the way even if Sony / zee does bring in required changes star/disney will still pose very tough competition to them so they need to constantly improve to match the competition. Sony has good picture and audio quality but so does star/disney hindi movie cha, infact Picture Quality of Sony Wah has reduced in past few months , also picture / audio can surely help contribute to get high viewership but good content still is most important thing without which channels cannot succeed