Why should 'smart meters' cost anything?
The point of a smart meter is that they can be read remotely saving the electricity companies money. The rest of it is just spin.
The cost of the electronics itself is or should be very low due to the scale of production. The major cost is therefore the installation cost which has to be balanced against the cost savings. This is all labour costs in the hands of the electricity company itself. It can invest in smart meters to reduce long term costs or it can not depending on whether it makes economic sense. If it takes more than 10 years to pay back then it doesn't makes sense to do it at all. There is no need for government involvement and if it makes sense it should not cost the consumer anything.