No, it wouldn't be a good idea to open up your own internet gambling enterprise. Although you're perfectly secure in your role as an ordinary player, your legal liability changes drastically once you step over the fence and into the role of operator.
There are quite a few different charges that can be brought against New Yorkers who are engaged in the business of running an unlicensed gambling operation. Even worse, the commission of gambling crimes at the state level can trigger the application of serious federal statutes.
Just look at the examples of the 18 people arrested in 2007 for illegal online sportsbook infractions and the 6 who were indicted for similar offenses in 2016 for info on what can happen if you attempt to take this course to fast but dangerous profits.