Can some of the professional players pitch to them about making a cue? Not only would it be a great product but it will help the game of pool.
Nike is all about making money and if they made a pool cue it would draw interest because of the brand. I know some may say it's laughable for Nike to build a cue but they make very good products. Remember when Nike first made golf clubs, people were laughing but now they are considered one of the best clubs.
They have the resources, money and R/D to make a very good cue and with a new product comes a marketing campaign to sell. This will be good for the game.
If pool is considered a sport then treat it as one and promote it to the big hitter of sports products.
Why would Nike EVER build a pool cue. Golf is a HUGE business, that continues to grow. Pool is an industry that peaked a hundred years ago, and has been in steep decline for the last forty years. We love the sport, but we are part of a shrinking minority.
Also, how do you know it would be a great product? They are not considered one of the best clubs by anybody I play with. Most people I know play Callaway, Titleist, Taylormade, or Ping.