Its a pre-requisit, as a wittness i call into court venecia, were free enterprise lead to the cities bloom and the return of the feudal ruling structure among its trade partners (osman empire) lead to the decline of this "italian" silicon valley back into obscurity.
https://www.britannica.com/place/Venice/The-commune
Which by deduction means, that you need a trade supporting eco-system, without taxation on the moving of goods. Oceans prefered. Which means, that hermit kingdoms waylaying is the biggest innovation embargo.
Basically, if you never get freedom of movement, and the old world drags enough at your coat, you get stuck forever and a day. The greeks colonialized the mediteranean and from this "outposts" the philosophers were able to cause a ruckus with the tribal-religous culture at home.
Its the liberty of new beginnings, cheap defense against parasitic neighbours + highways that are the secret sauce. And it turns sour inevitably.
Just look at the us becoming more like europe every day and the hopes projected on a new colony project (mars - without new surplus beginnings and highways though).