Government findings and/or fines do not affect the bottom line enough to change behaviors. Only sufficient numbers of consumers willing to change buying decisions will ever stop corporations from doing things that they shouldn't.
I don't know, look at the EU and you see government mandates and fines doing plenty of work. We only got USB-C in iPhones pretty much because the EU mandated it. Similarly on many other fronts, it may take time as the first waves of court cases get worked out, but any company that overlooks the rules there does so at its own peril. There is no reason that the US can't have the same, aside from lack of political will.
That's what companies want you to believe because they don't want government oversight. The only thing that will truly change behavior for companies the size of Apple are actions with billion dollar significance. Consumers can't do that, only governments can.
There can be both government oversight to bring the issues to light, and consumer action based on those issues.
So worst of both worlds?
Change the fines to be based on percentages of revenue and they'll change their tune real quick.
Or make people who make decisions liable for them.