Yes I know and I'm in favour of that too. But the big boys of the industry are not. On one hand the sheer volume of small generators creates real maintenance headaches and on the other nobody wants to lose control to community projects. So they lean on the government to centralise and there is simply not enough large area water for those kinds of projects.
So they go wind and solar.
Wind and solar have their place and will be incredibly important. But small scale hydro could have provided a really useful backstop. Which his why it has not happened, because it dilutes power.
Now a really useful adaptation of the perendev motor would be something to strive for. If only I had time....