This will have absolutely zero impact. Everybody knows you must use Microsoft products and if those don't comply with regulations, the regulations will have to change...
What a depressing reality where hostile US corporate data privacy practices and hostile US surveillance law take de facto priority over the EU's own privacy legislation meant to protect its own residents. I wish the EU politicians and regulators were more willing to enforce their own rules, and that the ECJ were more willing to be explicit rather than implicit about the meaning of its Schrems rulings, all of which wo…
The EU has provisions for very similar "hostile surveillance law" in its own member states. It just gave them a get out of jail free card in the GDPR. There is a considerable amount of hypocrisy about the EU's positions on privacy and data protection.
The trouble with this whole subject is that you get grandstanding politicians trying to make big statements that go so far that it becomes unrealistic to enforce them because you'd cause catastrophic economic and/or social damage. If you really want to improve things what you need is steady, incremental progress towards restricting unwanted invasions of privacy. You can start with the most invasive commercial spyware. After a while you have moved the Overton window so that the worst excesses of governments' own surveillance programmes start to become viable candidates for reform as well. Ideally you eventually move societies away from the politics of fear that motivates those kinds of mass surveillance laws but that doesn't seem likely any time soon.