to delay doing something so that you can see what happens or what other people do first.
Those investors who are willing to play the waiting game may find it to their advantage.
play the waiting game
To postpone or delay a decision or course of action so as to first see what might happen or what one's opponent(s) might do. The market is rather tumultuous at the moment, so I think we're better off playing the waiting game rather than making any hasty decisions.The prosecution is playing the waiting game to see if the defendant will change her mind about taking the plea bargain.