Some Scouts say you can develope control but not command (of course control vs command is arbitrary but Scouts say control is throwing in or very near the strike Zone and command is hitting spots - kinda like fine Motor skills vs gross Motor skills like Lifting a dumbell vs painting an art work).
that basically means you often can teach a wild guy that is all over the place and misses by 3 feet all the time to throw the ball near the Zone rather consistently but you can't teach "painting the Corners" consistently.
I would say that being able to throw "near" the Zone is an important skill. of course you Need to throw strikes but if a guy consistently misses by 3-4 inches it can be bad in a given game with a tight ump but it is not as worrysome as a guy who misses by 2-3 feet all the time.
without control it is hard to survive as a pitcher, but guys with plus stuff can get away with mediocre command if they avoid too many walks (especially in the BP, as a starter that is tougher).