Single serving containers for food have their place, but there's nothing that can't be stored in either wax paper, aluminum, or glass(in that order). Aluminum is probably the best balance between recyclability and weight(fuel need to transport . You can even make aluminum "bottles" that fit in preexisting vending machines.
But only a small fraction of the plastic gets recycled.
If 9/10ths of the plastic ends up in a landfill or the Pacific garbage patch, having 1/10th of that plastic recycled into another bottle (which then will eventually have 9/10ths tossed in a landfill anyways) isn't doing much. It's better than not recycling at all, but it's green washing to say that it's "eco friendly", which Capri-Sun allegedly did at this trade show.