[jccooper]

SpaceX can fly--or not--whomever they want. And they are, in fact, not flying their competitors. OneWeb is booked on a variety of SpaceX competitors: Arianespace (mostly Soyuz, but also optionally Ariane 6), Virgin, and Blue Origin.

SpaceX certainly hopes this gives them an advantage, and it probably does, though eventually someone is bound to copy them if they prove successful. Blue Origin is already well on their way to a Falcon 9-alike.

Launch is also only part of the cost of a satellite constellation.

[lorenzhs]

Soyuz is Roscosmos, not Arianespace. Maybe you meant Vega? But that’s a much smaller launcher.