The companies will rise prices to make up for it, after all, taxes are just another cost of doing business.
You can see this in what people did with pandemic relief checks: regular people used it to buy necessities, or pay rent. The rich invested it. If the rich hadn't gotten a relief check, they wouldn't even have noticed.
They don't even need a loophole to make up for the loss...
No, it never was. There was a headline rate at that level. But the actual rate was much lower.