There's Nextcloud/OCIS/Owncloud for Sharepoint (god I fucking hate Sharepoint) and Onedrive, there's Libreoffice/Collabora (and Onlyoffice, but that's russian...), there's Thunderbird for Email. Windows is absolutely replaceable also, of course, maybe even easier than the Office365 subscription mentioned above.
The lock in only exists in brains of (old) people that can't adapt. MS products can all be replaced, and should be in the EU. You simply cannot trust an American company anymore after Trump.
The lock in only exists in brains of (old) people that can't adapt. MS products can all be replaced, and should be in the EU. You simply cannot trust an American company anymore after Trump.