What's so Independent about a Supermarket?

We often use our local independent supermarket for grocery and other needs (but not so-called Jager bombs) but wonder if it is indeed local, independent, super or a market.

Surely a market is a place of trade, where artisans and farmers can ply their wares and trade their goods and/or services! At our local independent supermarket, trade is a one way street. Indeed when Fay set up a table outside our local independent supermarket to sell her home-made chutney she was politely but firmly asked to leave. It would seem that we are only allowed to buy goods in this particular so-called market.

And as far as we can see, there is nothing 'super' about our local independent supermarket. It isn't above any other supermarket - independent or otherwise. It may be above some underground services such as drains, telephone lines and the like, but surely, that doesn't count. It has some flats above it, so really, should be called a domestic submarket.
And 'Independent' - what is 'Independent' about our supermarket? It does not issue its own currency. We don't need a passport to go in it. They speak the same language as us (except the Saturday boy, Dean, who does not use verbs). The premises obey the laws of gravity, thermodynamics, economics and indeed The Law Of The Land (as we all have to - as we keep telling Fay's mother). There is nothing 'Independent' there. Except the 'Independent' newspaper, which we do not take.
And local. Well, we have to drive there, and back again with our bulky purchases.
So really we think our local independent supermarket should be re-classified as a 'Distant Needy Shop'.