So somewhere somebody discovers a method to generate say 15kW from a small handheld cube. Quantumfluctuating strings in a darkmatterfield but basically safe and limitless.
The inventor decides not to make money of it and sells it for an affordable price. I don’t know, something like a midsized car at first but drops down to the price a new pc.
What would happen to the economy, will it see a growth because of this invention or opposite? Would all powercompanies go out of business?