I wouldn't say that last bit though. So much code fails outside of the origin country, also from e.g. Dutch coders even though we're well aware how small our country is and how much we rely on trade and collaboration. People across the EU come into the country so you'd need to support other languages, payment methods, currencies, special characters in names, date notations, address formatting, timezones, phone numbers, etc. Part of Belgium even speaks the same language so the barrier really small, or even across the atlantic ocean where there are more people "in" The Netherlands except nobody ever realizes that a part of the country uses the US Dollar as its currency and is in a very different timezone.

Now living in Germany, they even translate timezone names. Not only do you have to look in a timezone database to figure out what a MESZ is, when the timezone database says "there is no such timezone" you have to realize you need to look in a German translation of it. Very approachable for the international people that need to know which timezone that German picked for the meeting invite

Which is all to say: sure, people know other countries exist and are more likely to need to learn to use localization, but by default it's not like everyone knows how to do that