There's a bit of a difference on which government body enforces which rule.
In quite a few countries, taxi rules are governed by cities - so the municipality government is the enemy.
Anti-monopoly/ predatory pricing rules are at least national level - and if you are unlucky you can go against the EU itself, which historically has not been afraid to slap companies with gargantuan fines that would never be allowed from the pro-business USA SC.
