I wonder why it is not possible to reduce the max amount of power each house can draw by 50% instead of doing blackouts. In Italy houses have remotely controlle

I wonder why it is not possible to reduce the max amount of power each house can draw by 50% instead of doing blackouts. In Italy houses have remotely controlled meters, if you change contract and have a different power allowance your meter gets reporgrammed without the need of an operator on site. This would force people to consume less power to avoid automatic detachment, while still not leaving them completely in the cold. Don't they have any kind of smart meter in Texas? Maybe reprogramming them is a slow operation that cannot be done to almost every meter in a short timespan?