You are entitled to create a similar database based on your own efforts or research. So, you could walk the streets of London with an iPad to make your own KmlxStreetMap. You just can't directly copy or transfer rows from someone else's.
This seems like a good page: https://www.pinsentmasons.com/out-law/guides/database-rights...
They might be useful for something like stopping someone who is in a jurisdiction where they apply from scraping your site to download a database you spent significant money collecting. But that doesn't help you if whoever is scraping your site is based somewhere else, which includes most of the world.
I wonder whether database rights would actually hold up for something like OpenStreetMap anyway. Is OSM generating new data in a creative process or investing significant effort in collecting data that existing sources? If it's the former then copyright probably does apply but database rights probably don't according to CJEU case law. If it's the latter then it's probably the other way around.
Whichever is the case, relocating your whole legal entity to the EU because of an issue like this might be a rather extreme reaction, and from the report it appears the decision here was made on the basis of many small factors and not just the issue of database rights.
If I compile a record of all temperatures for the last 10 years, How can I prevent someone from also creating a database that has temperatures for the last 10 years?
That is why in US Law facts can not be copyrighted, only "creative" works, and facts are not creative they are facts