Orbital ATK is a pretty crap company that is the anti-SpaceX.
While SpaceX slowly and methodically pioneered new technologies, and built its space program from the rocket up, litterally, Orbital (pre-ATK buyout) has been plundering government rocket technology wherever it could find it. It bought a bunch of decomissioned Peacekeeper MX ICBMs and turned them into the Minotaur IV. It bought a bunch of Russian Nk-33 engines from the Russians in the 1990s (which were part of the Soviet Lunar program), refirbished them, gave it a new name, and mounted it on a rocket it called "Antares". It plunder patent after patent. It's merger with ATK, this country's chief Solid Rocket Engine manufactuer, is again, about plundering taxpayer-paid for tech.
SpaceX has earned it. They've earned everything they've acheived which is why they have the most advanced space launch program in the world, by far, at the moment. It will be at least a decade before anyone (except maybe BlueOrigin) lands like they do.
Orbital is a scavenger. It is an old school Space company, but it's tendencies represent the absolute worst in the early 2000s Space Rush where a bunch of new space companies (including SpaceX) popped up, and most leveraged their ambitions on plundering retired government designs and hardware. Even Sierra Nevada did this: the Dreamchaser is the
NASA HL-20, a Space Station Freedom-era design, made real.
SpaceX simply did it legitimately and these others didn't, and as such, have had a harder time. SpaceX took an abandoned NASA/DoD/Northrop design for a rocket, for landing and for an engine (
namely the TR-106/TR-107 as part of the Space Launch Initiative), hired away all the people who worked on it, and built it little by little.