> the current capitalistic (?) model? Surely we would say the market is efficient

I'd like to highlight a a fundamental contradiction between "free[ly moving] markets" versus "free [to do what you want] markets."

1. The mathematically efficient market involves perfect information and restrictions on what you can do. No secret prices, no hidden NDA'ed transactions, no hidden ownership for straw-trades, etc.

2. The do-what-you-want market does allow you to "freely" do those things, but it isn't the efficient kind because of all the chicanery.

I often see an equivocation going on, where people use the features of #1 to promote what is actually #2.