> Power needs to be given away or people paid to take it is more of a function of limited storage abilities and limited ability to scale down rather then generating unlimited power.

There's no need to scale down solar or wind power.

Yes, storage is another way to make money from power prices that differ over time.

> [...] the cost has increased per hour a lot over the last 50 years.

Some sources of power, like solar, have been dropping in price a lot recently.