Linux

The money that will be saved is peanuts compared to the cost of the workers. Loss of productivity through the implementation of bad tools can be very costly. The various Microsoft Office programs also offer the possibility to add bespoke features. Microsoft Office does not leak data unless you chose to let it do so, at least in the eu.

Optimizations that might happen once a program with unacceptable performance is in a production environment, are generally optimizations that never happen. I've never seen a program make such a turnaround, it's wishful thinking without a basis in reality.

This thing really is set up for failure. I'm not against organisations moving away from products from large monopolistic companies, rather the opposite, I'm very much in favor. But if the move is done in such a way that it's bound to fail and then cement itself into people's mind as a bad thing, then it has accomplished the opposite of what it has set out to do. Right now Linux is ready for widespread adoption in environments where productivity matters, but in my experience libre office is not.