As a more in depth aside, your current examples are really weak.
Texas has a thriving electricity generation market. Of the increased costs claimed by
the study your link cites, almost 70% came from "stranded costs" payments which weren't market-based (basically paying electricity utilities for losing their monopoly status). That's almost $7 billion out of an alleged $10 billion in additional costs. More came from the cost of building wind power infrastructure.
However, that analysis didn't appear to tell the whole story.
For instance, the calculation of balancing energy savings
did not account for the multi-billion dollar expense of
building new transmission. Neither did it account for the
increased cost of purchasing additional backup capacity,
known in ERCOT as "ancillary services." ERCOT also has found
separately that wind is one of the most expensive forms
of power commonly used in Texas, with each megawatt
of power costing $53 to generate. And if one figures in its
actual operating capacity, then the cost of wind power
goes to $80 per megawatt hour.
This was another non-market cost. Looks to me like we can account for almost all of the higher costs paid by customers in the deregulated market from just these two parts that weren't market related. They were part of the deregulation process, but not actually deregulation itself.
Texas (whose companies cheated Californians out of money) politicians mocked California without any empathy. They claimed (falsely) that the problem was entirely California's 'enviro-nazi' regulations preventing supply from meeting demand during the dot-com boom. (false).
They were correct in that the above issues were contributing factors (they weren't "false" as you falsely claim). There were also the defective nature of the markets which allowed gaming of the market (by Enron and other generators and traders) and a remarkably disingenuous California government which interfered in the deregulation of the markets both by allowing the highly profitable Enron games to continue and by not allowing PG&E and Consolidated Edison to complete their deregulation process.