Belen
Legend
It has not been a problem. I have been gaming for a long time. I can usually send a call out to between 20 and 30 people and find enough to play whatever I want to run.What if your current group isn't interested in a new game? What if you don't have a group at all?
Under those circumstances, getting a group together to play a "Not D&D rpg" is a challenge.
They may prefer D&D but it is not difficult to find players for a Star Wars, Modern, Scifi, Horror, etc game.