German state moving 30,000 PCs to LibreOffice

The issue with these migrations is they never train the users, never have enough support personnel to facilitate the transition, a staggered departmental migration, and they always waste millions on consultants instead of the first two. With proper training and support in place, Zimbra and LibreOffice can replace everything M365 and then eventually after the support tickets start to die down they can start training on their chosen OS and now the same personnel they hired for the Zimbra/Libre migration can be used for an OS migration support. The issue isn't the software, the issue is the complete lack of a project plan and thus, the required training and support at the departmental level. One of our clients is a decent sized construction company, they moved from M365 to Zimbra + LibreOffice and ProjectLibre and is saving a ton of money on licensing, but the key is, they invested the first year of savings into training for their staff and they didnt move the whole company at once. They moved a few people at a time. We saw large increases in ticket volume with every group of 5 staff they did but within 2-3 weeks the ticket volume went down to close to normal. I think most of us IT people are just not wanting to learn new systems and would rather deal with the devil we know vs the devil we don't. In this case, I'm pleasantly surprised at how well those 3 applications are working for this construction company. A year in and we're on the last grouping of users and they all seem to actually like their new software better than M365. And as far as ticket volume, over the 1 year period we're actually at the same ticket volume per employee as the year before(which was m365 based) so I'm pleasantly surprised as well. But as many have pointed out here, I foresee the migration happening then in a year or two, they'll just migrate back and the cycle will continue.