And maybe that keeps the enterprise java and cloud architects away so projects could actually succeed without complexity or cost explosion :)
I guess it's because the state is forbidden to compete with the private sector by law/regulation (thank you neoliberals / capitalists...) so it just can't start something like this and the other big problem is due to the federated nature of german governance everony like to be the king in their area of control and collaborative projects tend to fail due to that. That was a huge problem during covid when every health department did their own thing regarding managing the data...
Additionally lot's of the personell that would be in charge for that is unfortunatly either delusional or incompetent from my limited experience so this could also backfire and turn into a subsidy for the buddys of the person.
But it's even basic things that are broken. Why has every city / municipality reinvent the wheel and organize their it stuff on their own... a non-profit or coop on the state level could just support them, do procurement and initial setup - this would result in more security and stability and less costs. There now some talks in that direction - it's 2023