Never happen for retail use...
The SOVIETS designed and built around 200 very small Strontium reactors to power weather stations, and other extreme remote sites in the 60’s and 70’s...
Today, people are DYING because they leak, or some idiot breaks one down for scrap metal...
When they start to leak just sell them to poor people.
Thats what happens with communism and that technology is old and now outdated. We have a much safer ways of doing things now. Do you think things like that would happen in the west?
The fact that a Soviet anything fails is not much of an argument against a technology.