I think about that every time I read about another government (or private!) company that wastes tens or hundreds of million of dollars (or euros or pounds) on custom software.
It seems like there should be 1, 2, or 3 DMV programs. The same for building codes, tax codes, etc. And prison software. You can be more like Massachusetts or Mississippi or Montana (hypothetical examples) but pick one and harmonize with it.
1: compiled is the lowest of 3 standards that outside accountants can do; "reviewed" is higher and "audited" is the highest. Even at the compiled level they mailed out postcards to a certain number of customers asking if they were customers over the past year and had spent this much money. It was fairly easy for the acquiring company's outside accountants to review PWC's work and bring it up to audited standard.