A driving motivation for the immediate formation of The Raku Foundation in a country in the European Union is the Cyber Resilience Act, which will make it mandatory for any software that is sold or licensed in the European Union to define its dependencies, to have a mechanism for reporting and fixing faults, and establishes legal responsibility for those who sell software. This has major consequences for FOSS developers, which the EU has taken into account, by creating a new category of entity called Open-source software steward.
As to why NL:
So you gotta choose an EU nation - the choice of NL was really a convenience (the main driver of the project lives there), but NL also has innate strengths as a home as is pretty neutral choice (ie not France, Germany) and a lot of SWE talent and good English speaking skills (even if the legal docs are in local language).
well, yeah - but noting that there were many consultations and opportunities to challenge this decision and I (for one) would have complained if I didn't think that NL was a solid choice