The US regulatory apparatus has been asleep at the wheel for 25+ years.
Not only do people need to be protected, but frankly this also creates weak high energy economic dams ready to burst under pressure.
By not regulating, these big tech companies grow tendrils into everything - they suck the oxygen out of ecosystems to take over them themselves, ridding sectors of healthy economic activity.
But they will not be anti-fragile in the face of disruption, because their metabolism relies upon infinite growth and sprawl that will come under attack. They are and the foundations are weak.