If you write for iOS, you are sharecropping. Your income exists at the sole discretion of an entity that has more power than you and very little incentive not to misuse it. Further, your income is more, not less at risk, if you are successful. If you lose, it's your loss. If you win, they take your niche, call you a plagiarist and kick you out with nothing. And if you are just puttering along, that's no guarantee you won't be sideswiped by a strategic or bureaucratic decision you can neither anticipate nor control.
If you write for iOS, you are sharecropping. Your income exists at the sole discretion of an entity that has more power than you and very little incentive not to misuse it. Further, your income is more, not less at risk, if you are successful. If you lose, it's your loss. If you win, they take your niche, call you a plagiarist and kick you out with nothing. And if you are just puttering along, that's no guarantee you won't be sideswiped by a strategic or bureaucratic decision you can neither anticipate nor control.