Rounding is such a weird boogeyman to me because people are like "the companies are just going to use it to get more money from the customers" but, they're doing that anyway. They don't need this excuse to raise prices they'll just do it anyway.
Same thing when people complain that raising minimum wage will increase prices, meanwhile prices have increased for 50 years completely separate from wages. They don't need the excuse to raise prices they're just gonna do it anyway.
If they want companies to not raise prices the only answer is regulation, but regulation is communism and therefore bad.
I'm so god damn tired.