The Barrier to entry is probably capital costs. Probably difficult at this point for enough lowly workers to pull their money and form a company, open stores,

The Barrier to entry is probably capital costs. Probably difficult at this point for enough lowly workers to pull their money and form a company, open stores, and compete with a Whole Foods. The mega corps already dominate and can undercut anything that is starting up. Amazon is kind of like a fiefdom where if they see someone building a castle in the distance, they can send some knights out to attack before it gets too big.