Probably no reason other than that it takes time and resources to go through all the steps necessary to launch in a region (e.g. localization, legal etc), and it's more effective to get feedback on a beta product early in one region than to delay for many.

I'm in Europe and it works just fine.

I didn't try it, just read the page:

>Data Studio is currently available to users in the United States and we’ll be rolling it out to other geographic regions throughout the year. We hope it helps you share more data and make better business decisions.

not working from Belgium: "Data Studio is not available in your country."

Works in Austria and Germany, though.

Interesting point: what if you work for someone in the US and want to collaborate on a report?

Or you work in the US but need to access / change a report while visiting a client in a country where it's not enabled...

Pretty lame.

FWIW it works in the Netherlands.

EU data protection can be in play ATM since they might not have this thing complaint, same goes for other regulations.

So the easy thing is to limit it to the US.

Working OK in the UK.

Compliant, as in complying with regulations?

Exactly. Because we in the EU do not want our customer data (be it personal identifiable information or not) to be transferred to the US without consent of our customers. And rightly so.

I am abbreviating massively here, but since the "Safe Harbor" things are actually a little bit more rough around data transfers.

Non the less Data Studio is available in Germany, as I have already used it. I might be limited on the data sources though.

Working in Brazil.

Not working in Ireland.

Works in Canada