What else can be more profitable for a consulting company than shifting the entire IT of a city or a country between two largely incompatible solutions? :)

See that's the neat thing SH has (together with HH, HB and ST) its own IT consultancy. Public enterprise, not some public-private partnership, and 5300 staff a quite a bit more than what Munich's IT department has.

And yes of course Munich is corrupt what do you expect it's Bavaria.