Ideas aren't magical; the only tricky part is holding on to one long enough to get it written down.
I do have a small collection of traditional SF ideas which I've never been able to sell. I'm known as a fantasy writer and neither my agent nor my editors want to risk my brand by jumping genre.
If you write, one of the questions you're always trying to answer is, Where do you get your ideas? And, if you write, you know how pointless a question this is and how difficult it is to answer.
Neophyte writers tend to believe that there is something magical about ideas and that if they can just get a hold of a good one, then their futures are ensured.
When I have an idea, it goes from vague, cloudy notion to 100,000 words in a heartbeat.