I'm a little surprised they haven't, but flight simulators have become a serious niche product. What once probably held a large part of the gaming market share is a shadow of what it once was thanks to increased consumers (a good thing) and the Call of Duty-ification of everything under the sun (a bad thing).
No one is interested in open-ended simulators and flight sticks just don't sell when everything can be done with a gamepad.
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