I usually don't like phrases like "Europe's Silicon Valley" or "Venice of the North". As much as they can be informative in some respects, such comparisons obscure and brush over the specificities of the things in question. It makes more sense to talk about the emergence of a strong tech sector in general terms and as one component of a healthy economy.
Having said that, there is reason to think that the region in question will become Europe's most dynamic and technologically powerful, in particular Poland, because of a number of coinciding factors, such as entrepreneurial spirit lacking in Germany and west of it, geopolitical necessity and historical precedent.
The geopolitical angle is quite interesting. Poland and the other countries sandwiched between Germany and Russia are situated on a geopolitical fault line that demands that these countries cooperate out of mutual interest. Economic strength becomes one pillar in maintaining not just a materially comfortable existence but a matter of existential importance and of independence. That's a pretty strong motivator given the history of the region. On top of that, the United States has a geopolitical interest in the region's strength. We know from analogous cases that American interest of this kind has usually contributed positively to regional and thus economic strength. And from recent developments vis-a-vis the Three Seas Initiative, we are witnessing a formal recognition of the necessity of regional strength by the countries in that region. In fact, the recent brouhaha in the European Commission over Poland is, when interpreted synoptically, a telltale sign of the country's rising importance.