Considering the upcoming FDA regs, I think more & more retail juice makers are going to be folding their tents, and disappearing. DIY is a way to help offset the frustration of seeing your favorite juices becoming unavailable. One may not be able to recreate a direct 1:1 replacement, but should be able to come close, or at least come up with a suitable substitute, as your DIY skills develop.
Also, being more self-sufficient is always a good item to add to one's personal toolbox.
I say this as someone who could qualify as one of the world's worst cooks. I could kill a Pop Tart...lol. Although last week, I gave bread making a try, for the first time in my life. I had to call the wife and ask her how to set the oven controls. Thank goodness no one was videoing me as I went through the process. I had bread dough stuck all over the place. But I managed to make 2 loaves, and they turned out amazingly good!
There's hope, even for the clumsy cooks among us.