The reasons I say no:
1-History of modern times, it just get more expensive.
2-You have to differenciate between centralised management and centralised technical systems.
-Centralised management over technical, can end up being a huge problem for the users/customers, meaning its out of touch with the area of operation.
-Splitting up leads to duplication/triplication of top management, which now have to negociate between each other through endless red tape, causing headaches for customers.
3-If a good working entity turn bad, it rot from the top, and if that is not fixed you get multiple times the rot if you split it in sections and overmanaged as wel. The entity that functioned good before had various sections as well, they just operated in sync with dissiline.
So the thing is if you don't understand the problem(Same type of people just different organisation), seeing you could not fix it, splitting it will just aggrevate the problems and cost will rise, yes a few will get rich.
I say this because electricity is one of the basic resources, that cannot be allowed to be mismanaged or conducted at high costs, if so it will exponentially crash monetary systems from the user perspective. The last 30 years this practise happenned and life did not got better for most worldwide, except a few.
You must understand the reason you cannot fix a problem, or it will turn into a chronic situation.