Ever since the first trial run of the Decision Review System in July 2008, the BCCI has been it's staunchest opposer. Four years later nothing has changed.
Interestingly, every other Test playing country wants technology in cricket. Add to that, the International cricket council's pro DRS stance. However, despite all the support it enjoys DRS has still not been made mandatory in international cricket.
All that was needed to make DRS mandatory was for any full member to ask for an open vote at ICC's executive board meeting. But no one did. Why you ask? That's where BCCI's muscle power comes into play . It's an open secret that most international teams look forward to hosting India. Not just for the quality of cricket that team India has to offer, but more importantly the kind of money the series brings in for the host board.
So, in the financial scenario that international cricket finds itself in who would want to burn it's bridges with the most powerful board in the world? Hence we have a status quo as far as the decision on DRS is concerned. While most other countries will continue to use technology on the cricket field, they will have to make do without it everytime they play againt India, home or away.