"The market" is not a single thing. It's an idea(ology) from economics, and a cultural mythology, that vaguely intersect at some point.
We all think we know what "The Market" is, supply, demand, competition and so on. It's existence and operation underwrites many a political argument.
Then there is the reality:
Walk in to a supermarket and "choose" from 20 different brands of tinned vegetable, grown in the same region, processed in a handful of factories ultimately owned by the same parent company.
"Own" a movie, on a device that you don't actually control in any way, that you were effectively forced to purchase, with money you don't have.
And so on....
So, in respectful mockery of Thatcher I say "There's no such thing as The Market" - not because I don't believe in the values of property, choice, competition, innovation.... but because we don't have these, and haven't for some time. The myth of "The Market" lives on the place of early (real) capitalism as we head toward "consumer communism".