Nate -- The hyderabad fans ARE indeed paying to see the matches. They pay with their presence, indirectly. The event is free because packed stands were important (probably for the sponsors too). So, just that they are not paying out-of-pocket, does not mean that they are not paying. Anyway, the state government has put in taxpayers' money into this. By all means these folks pay.
I disagree with your use of the term, "uncivilized" .. They are behaving like tennis fans should have been allowed to behave in other places if you ask me. This sport needs to get out of the elitist grip and become a sport that common man goes to enjoy. Because it really is a gladiatorial sport ; the very best one-on-one sport out there (in my view) that requires so much of all-round athleticism.
When golf brings in more fans than tennis, there is a problem. Make this sport what it really should be -- a great SPECTATOR sport, where the spectators can also participate a bit.
Tennis players are pampered way too much with all these etiquette stuff on what the fans should do.
I am sure all of you who play tennis (or have played tennis) at various levels, disagree with me. But I do NOT play tennis, and thus I have a pure fan's mind. Sorry, but if my scream is going to make you hit a rally shot too long, you are not a good enough player as far as I am concerned. I am going to scream. I know my scream is not going to make Michael Jordan miss his 3-point shot; why should it make a tennis player hit it long?
Wish I were in Hyderabad -- I cannot do what I want to do at Indian Wells. I can, at Hyderabad - the only place where I could have done it, apparently. Don't you call me uncivilized!

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The problem is that EVERYBODY should be screaming together, so the tennis players can constantly play with the noise (like basketball players do - they never hear idividual fans' shouting) .. Imagine constant crowd noise during a 20-shot rally which ends with ridiculous decibel levels? .. WHY NOT?
Jay