They are beverage companies that will be in business for many years to come. They all have found a niche in the beverage space that will allow them to compete with KO and PEP. However, they are not, and will never be, a threat to KO and PEP's dominance in the beverage industry.
JSDA is going to be around for many years to come, but they don't have what it takes to take on KO and PEP on a national level.
Jsda and Lbix can be extremely successful without "taking on" Ko or Pep. If either had just 2% of Ko's revenues (about $500 Million), it would be considered to have achieved enormous success. They don't even largely compete with similar products.
I don't own or closely follow Fizz. But for Jsda and Lbix at least, your post is way off base.