This cannot be explained

>>21455832 (OP)
Simple explanation is that the sell well. Or maybe Commander Sinclair likes peas and carrots.

They're cheap, abundant, taste 95% the same as fresh, pack tightly, long shelf life, easy to make, good with almost any dish. Farmers can make a shit load of them and whatever is excess for their fresh sales can just be frozen and last forever. Easy fake health food for "See I eat healthy!" fatasses to claim they don't only eat junk because they microwave a pack of this slop once a week (before dousing it in a 1:1 ratio of ranch:veg).
Why are you surprised something like this is readily available everywhere?

>>21455832 (OP)
I buy either those or the mixed veggies that also has corn and green beans. I add them to my ramen noodles or occasionally just heat them up with some butter as a veggie side with a pork chop dinner or something.

t. 34 y/o bachelor cooks for 1 every day

>>21455832 (OP)
Being able to throw a handful of frozen veggies in a bowl of soup is nice

>>21455832 (OP)
I can explain it to you: People purchase and eat it.

I'm not sure why you're confused. This thread really shouldn't be.