Competition keeps prices down. Excessive regulation reduces competition, penalizing start-ups and entrants to an industry while benefiting those already there. Hence, excessive regulation reduces the main force keeping prices down. The cost of compliance with excessive regulation is another driver of higher prices as it increases fixed and variable costs.
This is why you will often find “Big Business “ comfortable with increased regulation.
That’s a biggie. One reason why the super rich like high taxes. It hammers the lessor “rich” below them and hinders the lessor rich from competing with the supers established businesses.