>If you are looking for someone to launch your assets into orbit, who do you choose?
It heavily depends on the cost of the asset. If a satellite costs close to 1bn, it worth to use $110/launch but more reliable rocket.
It heavily depends on the cost of the asset. If a satellite costs close to 1bn, it worth to use $110/launch but more reliable rocket.
Many organizations don't have the spare time and capacity to afford all of that; they or their project may simply be done.
E.g. Curiosity has such a spare (I'm not sure if it's the same as the flight hardware or close enough) which will be sent in a future mission (I think 2017, though I don't have any sources at hand) with (some) different experiments on board.