They could have a nuclear weapon in about a month, as could Japan. In many ways they are more technologically advanced than we are.
I have in-laws there. I know their cell phone and internet networks are better than ours.
Heck about 6 years ago we got a ticket by a pretty SK cop. She did the whole thing on her phone, including having the ticket signed. The apps they have were far above what we had at the time.
Look at their pluses. Great schools and push on learning real skills, family stability and teaching kids not to shame the family, and a leader looking out for their best interests. Just one of those items (Obama) is why we're falling behind, let alone all three items not in our favor.
The Koreans could sell you a nuke cheaper than any other vendor.
Plus, they'd offer a 60 month service contract.
For five years you'd pay nothing except for tires, wiper blades, maybe a little tritium...