Both Aarhus and Copenhagen municipalities have decided this, and the ministry of Digitization is pioneering it for government administration. The decision so far primarily regards MS Office and MS cloud services, and MS Windows.
Also the government has decided to make guidelines to make the switch away from American software and services easier. These guidelines are meant both for public services AND private businesses.

We haven’t seen any results yet, but at least the political decision seems very clear. The goal is to end dependency on American software and services for Denmark. Which is in line with a similar decision earlier this year for EU.