Re: They dont want to use the MLAT.
Yes, corporations are working on alternatives: Here in Germany, Microsoft is building a data center for Azure and Microsoft services together with T-Systems. T-Systems own and runs the data center and controls the access, and Microsoft sells the services.
This set-up was explicitely done so that German users can be (relatively) sure that their data stays within the EU and US LEOs can not access it in cases like the one from the article. Since Microsoft doesn't control the access to the data, they are unable to comply to demands to give the data to US LEOs.