Do NOT under estimate these companies desire to use every dirty trick in the book to get in the way:
1st They will try and buy and regulate the technology themselves.
2nd They will make all attempts to make this device expensive to build and run.
3rd They will attempt to undermine the intellectual property.
4th They will attempt to prevent the device being made or used.
5th They will play the safety card.
Various legal and illegal events WILL occur to protect their investments.
They will LIE, CHEAT and STEAL to get what they want!
History is littered with examples:
1. High pressure vs Low pressure steam engines
2. AC vs DC electricity
And there are many more