Comment by Kon5ole

I think the main obstacles are the existing players in the energy space. They are huge organisations for the most part and take a long time to change, even if they were motivated to do so. Things have changed rapidly the past few years.

It can also be argued that many of them are not motivated, because they make money from selling electricity from highly valued assets (power plants). If electricity gets permanently cheaper, they stand to lose a lot of money.

There are probably other obstacles as well, but I don't think any of them are insurmountable.