I'm really excited about this! The more entities that can launch, and land vehicles the better! This will surely benefit everyone!
Random though, when private companies like SpaceX "replace" say NASA's service of launching rockets, would this free more resources for NASA to explore other things?
That's exactly the goal of NASA's commercial launch programs (ISS resupply, etc). NASA wants to (and should) focus on science, and pushing the limits further. Commercial companies like SpaceX are now taking on the role of operating (and refining) the proven technologies.
Random though, when private companies like SpaceX "replace" say NASA's service of launching rockets, would this free more resources for NASA to explore other things?