Polish "economic miracle" could means several things, we have one constantly reinvented by state propaganda to shut our faces and i lost count long ago what they mean currently. Generally over the last two decades i would say it's blanket term for sucking up the cash from EU (Poland was and still is all the time most subsidized country) while not entirely integrating into EU financial structures to not be hit as hard by the crisises like in 2008 (fun fact: even the fucker balcerowicz knows euro is not good and lobbying hard for keeping currency was probably the only good thing he ever did) and actually quite skillful engineereing of social dumping both from and to Poland.

Before that it was standard for postsocialist country "let's lose 30 years of development, become colonised, and call that economical miracle"

never heard of Poland(, or any country for that matter,) funding 100% of a company while leaving the dividends to foreign hands

Huh? That's happening all the time, it's called "privatisation". In Poland (and i suspect in every postsocialist country) there was especially scummy way to do it in first 3 years of transformation: industry was bought by random people substituted by foreign business, for peanuts, and those peanuts were provided by the company being bought as lease, so effectively it was state just giving up the industry for free, nearly always into foreign hands.

It also did happened later like the case of modern steel mill being build, immediately sold for nearly nothing and of course liquidated as competition (in Silesia around 2005 iirc).

There was also even more blatant case i do known, though it probably also happened way more elswhere and wasn't into foreign hands specifically: Meiji Japan build state industry and then to purposefully kickstart not even capitalism but immediately imperialism, they just given it up to zaibatsus, creating the industrial molochs that would lead Japan straight into fascism. And considering the still-mostly medieval development level of most of coutry it could be said that they literally pushed the imperialism button.