For basic things like roads?
> The "duplication of effort" is a plus for a functioning market bringing competition, cooperation, lower cost, and increased standard of living. [1]
Cooperation beats competition. Think Linux and Balkanized Unix (if you want to stay in the tech analogies)
> Whether they have this or that department will be greatly outweighed by the massive bureaucratic burden and special interest groups.
What would those SIGs defend?
> If they are to have competent people to run the program
Not everyone competent work for money. Maybe that will weed out the sociopaths from C-level positions, at least.
> Will be replaced by the armed enforcement department.
I'd love to know your reasoning behind this.
> There is but it is outsourced to the IRS or other department
Which cuts costs because they are already doing it and there is no increase in their workload.
> Like it or not, access to the internet is a scarce resource
Yes, but you only need to assess health and ensure QoS levels are maintained. It's completely understandable to be throttled in peak load times and enjoy more resources off-peak.