It would cost an amount of money, but it wouldn’t really be a hugely expensive undertaking nor would it take longer than 5 years tops if done with any level of competency. There are 8 American cities that each individually have a higher population than the country of Estonia. The administrative overhead isn’t very big to begin with.

Nah. Most of the software is free, and there's mature free open options for everything, now.

The expenses are in training and taking the time to talk through simpler processes, and political in making folks give up their favorite sacred cows.

Critical stuff should be moved pretty quick.

Sometimes a hard conversation has to happen about what is really "critical", of course.