Fortunately the market is about putting stuff into orbit, not about putting stuff into orbit with reusable rocket. ULA also has monopoly in Hydolox rockets. That however is not relevant and its not a useful use of the word monopoly.
You're missing the point. It's perfectly relevant to point out that SpaceX is now able to charge much more for reuse than the marginal cost, effectively being able to charge monopoly rent for being the only player on the field with a reuse capability. Of course, it's not a total monopoly on launch period, but that's missing the point. A 30% reduction in price doesn't represent the ultimate lowest cost of reuse because currently there's no competition for reuse.
Indeed, they are limiting the discounts to 10% [1].
> What is your current thinking on the savings for customers using a reused Falcon 9 first stage? Is a 30 percent discount realistic?
> We are not decreasing the price by 30 percent right now for recovered and reused vehicles. We’re offering about a 10 percent price reduction. I’d rather fly on an airplane that’s flown before as I’d feel more comfortable with its reliability.
> At this point that is a reasonable reduction and then, as we recover some of the costs associated with the investment that we put into the Falcon 9 to achieve that, then we might get a little bit more. But in general, it’s about 10 percent right now.
