That is the best analogy I have seen so far. Moreover, it allows the US to search the house WITHOUT the consent or cooperation of the foreign government!
The EU has laws protecting the data of it's citizens. By complying with US law, and allowing the data to be handed over to US authorities, they will be in violation of the EU laws! This puts MS (and every other American tech company) in a VERY awkward position! Do they break US law or EU law? Either way, they will be breaking SOMEONE'S laws, whether they hand over the data or not!
This is also going to accelerate the decline of the use American tech overseas. Germany has already stated that they are moving to open source software, due in no small part to the NSA's overreaching spying programs...and the UK has also expressed interest in moving away from Microsoft products and services. Expect those governments, as well as other foreign and multinational corporations to move even more quickly away from US tech to keep their data secure and away from the prying eyes of the NSA, CIA and other US agencies!
Another casualty here will be the "cloud". NO ONE outside of the US is going to trust their sensitive data with Amazon, Microsoft, or Google (or any others based in the US) if the US takes the position that all data, stored ANYWHERE IN THE WORLD, is subject to their laws and could be searched and/or seized at any given moment, with or without the consent, permission or knowledge of foreign governments!
This court just, single-handedly, shot the entire American tech sector squarely in the balls. It's going to have ramifications that will take YEARS to sort out.