To be clear, there is nothing wrong from being "from concentrate", other than probably a huge PR campaign by major OJ companies to make you think juice "not from concentrate" is somehow more healthier or something. Fun fact is those are the same PR companies that Kellogs used to coin "breakfast is the most important meal of the day" which still as of today many doctors argue that actually your last meal is the most important because as you sleep your body regenerates and besides it will be left for the time of your sleep (8 hours?) without food or water.
Anyways there is nothing wrong with orange juice from concentrate. Its always been like this: 60% OJ concentrate, rest water. As that a good healthy ration. "Not from concentrate" is a PR gimmick. Think for yourself: A glass of "not from concentrate" orange juice would have 4-6 grown oranges squeeze to fill it in. What was the last time you ate 4-6 grown oranges at one sitting, and do you really believe thats healthy? If anything it makes your liver works super hard to put all that extra vitamin C into your bladder so you can rush to tha bathroom.