Let's take a moment to talk about making money, and lots of it!
Sometimes in life, ideas need to be challenged. Now, it may seem like an uphill battle for someone to build a new service that can beat the established incumbent. However, I've seen it time and time again, that this can ABSOLUTELY be done. Here are some ideas on why you CAN build a successor to Satoshi Dice:
TRAFFIC, TRAFFIC, TRAFFIC!
Build a complete turnkey affiliate program that allows savvy individuals to generate and refer traffic to their own skinned dice clone. The operator needs to provide different website themes, custom URL, traffic and betting stats, localized in all major languages, and of course provide a full bankroll.
The #1 reason why Satoshi Dice is so successful, is because of their integration with Blockchain.info. Just imagine if your local bank implemented a feature to easily gamble from within your online banking (some would say they already do this with investment accounts lol). THAT BEING SAID, PARTNERSHIPS WITH WALLET DEVELOPERS ARE KEY!
Many people, including myself, are very interested in mining or investing in Altcoins (ie. Litecoin, Namecoin, etc). There are not many places to spend these other virtual currencies and thus gambling some of those coins is probably inevitable.
In a business as grey as this one, bad stuff can (and probably will) happen that is completely outside of one's control. For example:
Like they say, patience is a virtue and sometimes just being somewhere at the right place, right time is the key to success.