Inspire all of us by renewing this domain for next 10 years

100% you won't & you can't

BitcoinExchange.in / BitcoinExchange.co.in would be worth for 10 btc

Bullocks to you as well.Its a damn domain not a vegetable shop with daily earnings of 5000Rs by selling green leafy vegetables.Coinsecure/Unocoin/BtxIndia ,all are doing good business without having to spend 10 btc on stupid domain sellers.Keep the domains to yourself for the next 20 years I'd say.
do you think sex.com owner is mad !?
All Top 500 companies own generic domain in their industry. I am not here to teach you for free. you should grow by yourself.
To be honest, BitcoinExchangeIndia.com may fetch 2 btc max in 5 years.